Edit Profile (opens in new tab) Lin, Fucai Co-Author Distance Author ID: lin.fucai Published as: Lin, Fucai; Lin, Fu Cai; Lin, F. C. more...less External Links: Google Scholar · ResearchGate · MathOverflow Documents Indexed: 94 Publications since 2004, including 9 Additional arXiv Preprints Reviewing Activity: 12 Reviews Co-Authors: 36 Co-Authors with 77 Joint Publications 864 Co-Co-Authors all top 5 Co-Authors 17 single-authored 25 Lin, Shou 24 Liu, Chuan 9 Bao, Meng 6 Shen, Rongxin 4 Tang, Zhongbao 4 Zhang, Jing 4 Zhang, Kexiu 3 Li, Jinjin 3 Xie, Lihong 2 Li, Kedian 2 Li, Xiaoting 2 Lin, JingLing 2 Lin, Yujin 2 Ravsky, Alex 2 Shi, Tingting 2 Wu, Qiyun 2 Wu, Ting 2 Xie, Yufan 1 Cao, Jiling 1 Cao, Xiyan 1 Chen, Wei 1 Cobzaş, Ştefan 1 Du, Lei 1 Feng, Ziqin 1 He, Wei 1 He, Zhaorong 1 Junnila, Heikki J. K. 1 Li, Changqing 1 Li, Jiada 1 Li, Zhaowen 1 Qi, Xixi 1 Sakai, Masami 1 Sánchez, Iván 1 Sun, Qianqian 1 Sun, Wen 1 Wu, Yongxing all top 5 Serials 33 Topology and its Applications 5 Houston Journal of Mathematics 4 Advances in Mathematics (Beijing) 4 Filomat 3 Studia Scientiarum Mathematicarum Hungarica 3 Topology Proceedings 3 Bulletin of the Malaysian Mathematical Sciences Society. Second Series 2 Bulletin of the Iranian Mathematical Society 2 Questions and Answers in General Topology 2 Journal of Zhangzhou Teachers College. Natural Science 2 Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A: Matemáticas. RACSAM 2 Fuzzy Systems and Mathematics 2 Journal of Mathematical Research with Applications 1 Rocky Mountain Journal of Mathematics 1 Ukrainian Mathematical Journal 1 Fuzzy Sets and Systems 1 Kodai Mathematical Journal 1 Publications de l’Institut Mathématique. Nouvelle Série 1 Semigroup Forum 1 Acta Mathematica Hungarica 1 Indagationes Mathematicae. New Series 1 Bulletin of the Belgian Mathematical Society - Simon Stevin 1 Mathematical Communications 1 Soft Computing 1 Chinese Quarterly Journal of Mathematics 1 Journal of Mathematical Study 1 Frontiers of Mathematics in China 1 Journal of Zhangzhou Normal University. Natural Science 1 Banach Journal of Mathematical Analysis 1 Communications in Mathematical Research 1 Topological Algebra and its Applications all top 5 Fields 88 General topology (54-XX) 43 Topological groups, Lie groups (22-XX) 6 Sequences, series, summability (40-XX) 5 Group theory and generalizations (20-XX) 4 Functional analysis (46-XX) 3 Combinatorics (05-XX) 3 Number theory (11-XX) 3 Real functions (26-XX) 2 Category theory; homological algebra (18-XX) 1 Convex and discrete geometry (52-XX) 1 Computer science (68-XX) Publications by Year all cited Publications top 5 cited Publications Citations contained in zbMATH Open 58 Publications have been cited 283 times in 135 Documents Cited by ▼ Year ▼ On rectifiable spaces and paratopological groups. Zbl 1226.54038 Lin, Fucai; Shen, Rongxin 27 2011 Feathered gyrogroups and gyrogroups with countable pseudocharacter. Zbl 1499.54141 Bao, Meng; Lin, Fucai 18 2019 A note on rectifiable spaces. Zbl 1247.54032 Lin, Fucai; Liu, Chuan; Lin, Shou 16 2012 On paratopological groups. Zbl 1276.54027 Lin, Fucai; Liu, Chuan 15 2012 Networks on free topological groups. Zbl 1309.54011 Li, Zhaowen; Lin, Fucai; Liu, Chuan 12 2015 \(S_\omega\) and \(S_2\) on free topological groups. Zbl 1302.22003 Lin, Fucai; Liu, Chuan 12 2014 The extensions of some convergence phenomena in topological groups. Zbl 1312.54016 Lin, Shou; Lin, Fucai; Xie, Li-Hong 11 2015 A special class of semi(quasi)topological groups and three-space properties. Zbl 1387.22002 Tang, Zhongbao; Lin, Shou; Lin, Fucai 9 2018 Statistical versions of sequential and Fréchet-Urysohn spaces. Zbl 1349.54017 Tang, Zhongbao; Lin, Fucai 9 2015 Symmetric products and closed finite-to-one mappings. Zbl 1384.54007 Tang, Zhongbao; Lin, Shou; Lin, Fucai 7 2018 Quotient with respect to admissible \(L\)-subgyrogroups. Zbl 1473.54038 Bao, Meng; Lin, Fucai 7 2021 Countable tightness and \({\mathfrak{G}} \)-bases on free topological groups. Zbl 1440.54027 Lin, Fucai; Ravsky, Alex; Zhang, Jing 7 2020 Locally \(\sigma\)-compact rectifiable spaces. Zbl 1325.22001 Lin, Fucai; Zhang, Jing; Zhang, Kexiu 6 2015 Topologically subordered rectifiable spaces and compactifications. Zbl 1283.54021 Lin, Fucai 6 2012 The \(k\)-spaces property of the free abelian topological groups over non-metrizable Lašnev spaces. Zbl 1366.22003 Lin, Fucai; Liu, Chuan 6 2017 A note on paratopological groups with countable networks of sequential neighborhoods. Zbl 1279.22008 Lin, Fucai 6 2013 The \(k_{R}\)-property of free abelian topological groups and products of sequential fans. Zbl 1422.54041 Lin, Fucai; Lin, Shou; Liu, Chuan 5 2018 A problem of M. Tkachenko on semitopological groups. Zbl 1297.54111 Lin, Fucai; Zhang, Kexiu 5 2014 Local minimalities in paratopological groups. Zbl 1284.22003 Lin, Fucai 5 2014 Compactly generated rectifiable spaces or paratopological groups. Zbl 1279.22002 Lin, Fucai 5 2013 Point-countable covers and sequence-covering maps. Zbl 1396.54031 Lin, Fucai; Lin, Shou; Sakai, Masami 5 2018 A note on free paratopological groups. Zbl 1269.22001 Lin, Fucai 5 2012 On sequence-covering boundary compact maps of metric spaces. Zbl 1482.54016 Lin, Fucai; Lin, Shou 5 2010 Submetrizability of strongly topological gyrogroups. Zbl 1511.54020 Bao, Meng; Lin, Fucai 4 2021 Remainders of semitopological groups or paratopological groups. Zbl 1311.22004 Lin, Fucai; Liu, Chuan; Xie, Li-Hong 4 2014 Free Abelian paratopological groups over metric spaces. Zbl 1307.22001 Lin, Fucai; Liu, Chuan; Lin, Shou; Cobzas, Stefan 4 2015 Pseudobounded or \(\omega\)-pseudobounded paratopological groups. Zbl 1265.54133 Lin, Fucai; Lin, Shou 4 2011 Two weak forms of countability axioms in free topological groups. Zbl 1353.54024 Lin, Fucai; Liu, Chuan; Cao, Jiling 3 2016 Sequence-covering maps on generalized metric spaces. Zbl 1309.54007 Lin, Fucai; Lin, Shou 3 2014 The \(k_R\)-property in free topological groups. Zbl 1383.54035 Lin, Fucai; Lin, Shou; Liu, Chuan 3 2017 Metrizability of rectifiable spaces. Zbl 1284.54012 Lin, Fucai 3 2013 Uniform covers at non-isolated points. Zbl 1158.54009 Lin, Fucai; Lin, Shou 3 2008 Topological monomorphisms between free paratopological groups. Zbl 1259.54005 Lin, Fucai 3 2012 Generalized metric properties on hyperspaces with the Vietoris topology. Zbl 1501.54009 Lin, Fucai; Shen, Rongxin; Liu, Chuan 3 2021 A note on hyperspaces by closed sets with Vietoris topology. Zbl 1504.54015 Liu, Chuan; Lin, Fucai 3 2022 The topological properties of \(q\)-spaces in free topological groups. Zbl 1356.22005 Lin, Fucai; Liu, Chuan; Lin, Shou 2 2017 Addendum to “\(S_\omega\) and \(S_2\) on free topological groups”. Zbl 1317.22003 Lin, Fucai; Liu, Chuan 2 2015 A note on pseudobounded paratopological groups. Zbl 1311.54025 Lin, Fucai; Lin, Shou; Sánchez, Iván 2 2014 Hyperspaces with a countable character of closed subsets. Zbl 1515.54010 Liu, Chuan; Lin, Fucai 2 2023 Maps on submetrizable spaces. Zbl 1223.54041 Lin, Fucai; Lin, Shou 2 2010 Local properties on the remainders of the topological groups. Zbl 1234.54046 Lin, Fucai 2 2011 About remainders in compactifications of paratopological groups. Zbl 1303.54002 Lin, Fucai; Lin, Shou 2 2014 The operators of rotoids in homogeneous spaces or generalized ordered spaces. Zbl 1283.54026 Lin, Fucai 2 2014 On pairwise semi-stratifiable spaces. Zbl 1299.54062 Li, Kedian; Lin, Fucai 2 2013 Countable tightness and \(k\)-property of free topological vector spaces. Zbl 1446.54006 Lin, Fucai; Lin, Shou; Liu, Chuan 2 2019 Constructing polytomous knowledge structures from fuzzy skills. Zbl 1543.68358 Sun, Wen; Li, Jinjin; Lin, Fucai; He, Zhaorong 2 2023 The countable type properties in free paratopological groups. Zbl 1399.22008 Lin, Fucai; Liu, Chuan; Zhang, Kexiu 1 2017 The quasi-metrizability of hyperspaces. Zbl 1530.54009 Liu, Chuan; Lin, Fucai 1 2023 A normal and Moore paratopological group. Zbl 1363.22003 Lin, Shou; Lin, Fucai 1 2016 Uniform bases at non-isolated points and maps. Zbl 1225.54004 Lin, Fucai; Lin, Shou 1 2011 Regular bases at non-isolated points and metrization theorems. Zbl 1299.54056 Lin, Fucai; Lin, Shou; Junnila, Heikki J. K. 1 2012 Notes on countable tightness of the subspaces of free (abelian) topological groups. Zbl 1376.22005 Lin, Fucai; Feng, Ziqin; Liu, Chuan 1 2017 Pseudocompact rectifiable spaces. Zbl 1284.54041 Lin, Fucai 1 2014 Notes on free topological vector spaces. Zbl 1461.46002 Lin, Fucai; Liu, Chuan 1 2020 Hyperspace of finite unions of convergent sequences. Zbl 1499.54037 Lin, JingLing; Lin, Fucai; Liu, Chuan 1 2021 The \(G\)-connected property and \(G\)-topological groups. Zbl 1499.40084 Wu, Yongxing; Lin, Fucai 1 2019 Strongly topological gyrogroups with remainders close to metrizable. Zbl 1497.54030 Bao, Meng; Lin, Yujin; Lin, Fucai 1 2022 An affirmative answer to Yamada’s conjecture. Zbl 1430.22003 Liu, Chuan; Lin, Fucai 1 2019 Hyperspaces with a countable character of closed subsets. Zbl 1515.54010 Liu, Chuan; Lin, Fucai 2 2023 Constructing polytomous knowledge structures from fuzzy skills. Zbl 1543.68358 Sun, Wen; Li, Jinjin; Lin, Fucai; He, Zhaorong 2 2023 The quasi-metrizability of hyperspaces. Zbl 1530.54009 Liu, Chuan; Lin, Fucai 1 2023 A note on hyperspaces by closed sets with Vietoris topology. Zbl 1504.54015 Liu, Chuan; Lin, Fucai 3 2022 Strongly topological gyrogroups with remainders close to metrizable. Zbl 1497.54030 Bao, Meng; Lin, Yujin; Lin, Fucai 1 2022 Quotient with respect to admissible \(L\)-subgyrogroups. Zbl 1473.54038 Bao, Meng; Lin, Fucai 7 2021 Submetrizability of strongly topological gyrogroups. Zbl 1511.54020 Bao, Meng; Lin, Fucai 4 2021 Generalized metric properties on hyperspaces with the Vietoris topology. Zbl 1501.54009 Lin, Fucai; Shen, Rongxin; Liu, Chuan 3 2021 Hyperspace of finite unions of convergent sequences. Zbl 1499.54037 Lin, JingLing; Lin, Fucai; Liu, Chuan 1 2021 Countable tightness and \({\mathfrak{G}} \)-bases on free topological groups. Zbl 1440.54027 Lin, Fucai; Ravsky, Alex; Zhang, Jing 7 2020 Notes on free topological vector spaces. Zbl 1461.46002 Lin, Fucai; Liu, Chuan 1 2020 Feathered gyrogroups and gyrogroups with countable pseudocharacter. Zbl 1499.54141 Bao, Meng; Lin, Fucai 18 2019 Countable tightness and \(k\)-property of free topological vector spaces. Zbl 1446.54006 Lin, Fucai; Lin, Shou; Liu, Chuan 2 2019 The \(G\)-connected property and \(G\)-topological groups. Zbl 1499.40084 Wu, Yongxing; Lin, Fucai 1 2019 An affirmative answer to Yamada’s conjecture. Zbl 1430.22003 Liu, Chuan; Lin, Fucai 1 2019 A special class of semi(quasi)topological groups and three-space properties. Zbl 1387.22002 Tang, Zhongbao; Lin, Shou; Lin, Fucai 9 2018 Symmetric products and closed finite-to-one mappings. Zbl 1384.54007 Tang, Zhongbao; Lin, Shou; Lin, Fucai 7 2018 The \(k_{R}\)-property of free abelian topological groups and products of sequential fans. Zbl 1422.54041 Lin, Fucai; Lin, Shou; Liu, Chuan 5 2018 Point-countable covers and sequence-covering maps. Zbl 1396.54031 Lin, Fucai; Lin, Shou; Sakai, Masami 5 2018 The \(k\)-spaces property of the free abelian topological groups over non-metrizable Lašnev spaces. Zbl 1366.22003 Lin, Fucai; Liu, Chuan 6 2017 The \(k_R\)-property in free topological groups. Zbl 1383.54035 Lin, Fucai; Lin, Shou; Liu, Chuan 3 2017 The topological properties of \(q\)-spaces in free topological groups. Zbl 1356.22005 Lin, Fucai; Liu, Chuan; Lin, Shou 2 2017 The countable type properties in free paratopological groups. Zbl 1399.22008 Lin, Fucai; Liu, Chuan; Zhang, Kexiu 1 2017 Notes on countable tightness of the subspaces of free (abelian) topological groups. Zbl 1376.22005 Lin, Fucai; Feng, Ziqin; Liu, Chuan 1 2017 Two weak forms of countability axioms in free topological groups. Zbl 1353.54024 Lin, Fucai; Liu, Chuan; Cao, Jiling 3 2016 A normal and Moore paratopological group. Zbl 1363.22003 Lin, Shou; Lin, Fucai 1 2016 Networks on free topological groups. Zbl 1309.54011 Li, Zhaowen; Lin, Fucai; Liu, Chuan 12 2015 The extensions of some convergence phenomena in topological groups. Zbl 1312.54016 Lin, Shou; Lin, Fucai; Xie, Li-Hong 11 2015 Statistical versions of sequential and Fréchet-Urysohn spaces. Zbl 1349.54017 Tang, Zhongbao; Lin, Fucai 9 2015 Locally \(\sigma\)-compact rectifiable spaces. Zbl 1325.22001 Lin, Fucai; Zhang, Jing; Zhang, Kexiu 6 2015 Free Abelian paratopological groups over metric spaces. Zbl 1307.22001 Lin, Fucai; Liu, Chuan; Lin, Shou; Cobzas, Stefan 4 2015 Addendum to “\(S_\omega\) and \(S_2\) on free topological groups”. Zbl 1317.22003 Lin, Fucai; Liu, Chuan 2 2015 \(S_\omega\) and \(S_2\) on free topological groups. Zbl 1302.22003 Lin, Fucai; Liu, Chuan 12 2014 A problem of M. Tkachenko on semitopological groups. Zbl 1297.54111 Lin, Fucai; Zhang, Kexiu 5 2014 Local minimalities in paratopological groups. Zbl 1284.22003 Lin, Fucai 5 2014 Remainders of semitopological groups or paratopological groups. Zbl 1311.22004 Lin, Fucai; Liu, Chuan; Xie, Li-Hong 4 2014 Sequence-covering maps on generalized metric spaces. Zbl 1309.54007 Lin, Fucai; Lin, Shou 3 2014 A note on pseudobounded paratopological groups. Zbl 1311.54025 Lin, Fucai; Lin, Shou; Sánchez, Iván 2 2014 About remainders in compactifications of paratopological groups. Zbl 1303.54002 Lin, Fucai; Lin, Shou 2 2014 The operators of rotoids in homogeneous spaces or generalized ordered spaces. Zbl 1283.54026 Lin, Fucai 2 2014 Pseudocompact rectifiable spaces. Zbl 1284.54041 Lin, Fucai 1 2014 A note on paratopological groups with countable networks of sequential neighborhoods. Zbl 1279.22008 Lin, Fucai 6 2013 Compactly generated rectifiable spaces or paratopological groups. Zbl 1279.22002 Lin, Fucai 5 2013 Metrizability of rectifiable spaces. Zbl 1284.54012 Lin, Fucai 3 2013 On pairwise semi-stratifiable spaces. Zbl 1299.54062 Li, Kedian; Lin, Fucai 2 2013 A note on rectifiable spaces. Zbl 1247.54032 Lin, Fucai; Liu, Chuan; Lin, Shou 16 2012 On paratopological groups. Zbl 1276.54027 Lin, Fucai; Liu, Chuan 15 2012 Topologically subordered rectifiable spaces and compactifications. Zbl 1283.54021 Lin, Fucai 6 2012 A note on free paratopological groups. Zbl 1269.22001 Lin, Fucai 5 2012 Topological monomorphisms between free paratopological groups. Zbl 1259.54005 Lin, Fucai 3 2012 Regular bases at non-isolated points and metrization theorems. Zbl 1299.54056 Lin, Fucai; Lin, Shou; Junnila, Heikki J. K. 1 2012 On rectifiable spaces and paratopological groups. Zbl 1226.54038 Lin, Fucai; Shen, Rongxin 27 2011 Pseudobounded or \(\omega\)-pseudobounded paratopological groups. Zbl 1265.54133 Lin, Fucai; Lin, Shou 4 2011 Local properties on the remainders of the topological groups. Zbl 1234.54046 Lin, Fucai 2 2011 Uniform bases at non-isolated points and maps. Zbl 1225.54004 Lin, Fucai; Lin, Shou 1 2011 On sequence-covering boundary compact maps of metric spaces. Zbl 1482.54016 Lin, Fucai; Lin, Shou 5 2010 Maps on submetrizable spaces. Zbl 1223.54041 Lin, Fucai; Lin, Shou 2 2010 Uniform covers at non-isolated points. Zbl 1158.54009 Lin, Fucai; Lin, Shou 3 2008 all cited Publications top 5 cited Publications all top 5 Cited by 108 Authors 35 Lin, Fucai 32 Lin, Shou 20 Liu, Chuan 14 Xie, Lihong 11 Li, Piyu 11 Zhang, Jing 9 Bao, Meng 9 Ling, Xuewei 6 Cai, Zhangyong Cai 6 He, Wei 5 Banakh, Taras Onufrievich 5 Peng, Liangxue 5 Shen, Rongxin 5 Tang, Zhongbao 5 Zhou, Xiangeng 4 Li, Jinjin 4 Liu, Li 4 Xu, Xiaoquan 3 Chen, Jiewen 3 Liu, Xin 3 Mou, Lei 3 Ravsky, Alex 3 Tuyen, Luong Quoc 3 Wang, Hanfeng 2 Cao, Jiling 2 Jin, Yingying 2 Khan, Moiz-ud-din 2 Li, Kedian 2 Liang, Qianqian 2 Liu, Limin 2 Renukadevi, Vellapandi 2 Sánchez, Iván 2 Suksumran, Teerapong 2 Tkachenko, Mikhail Gelievich 2 Tu, Jin-Ji 2 Tuyen, Ong V. 2 Vijayashanthi, P. 2 Wattanapan, Jaturon 2 Xi, Wenfei 2 Xiao, Zhiqiang 2 Xuan, Weifeng 2 Yamada, Kohzo 2 Zhang, Kexiu 2 Zhao, Bin 1 Adhikary, Nayan 1 Atiponrat, Watchareepan 1 Beshimov, Ruzinazar B. 1 Chen, Mengna 1 Chen, Wei 1 Cobzaş, Ştefan 1 Dahmen, Rafael 1 Deng, Yu-Ming 1 Dikranjan, Dikran N. 1 Eshed, Aviv 1 Feng, Ziqin 1 Ferrando, Juan Carlos 1 Ge, Xun 1 Ge, Ying 1 Guo, Mingyue 1 Guo, Sheng Jun 1 Hernández, Salvador 1 Inthakon, Warunun 1 Iqbal, Muhammad Asad 1 Kaewkhao, Attapol 1 Kannan, Jeevananthan 1 Kočinac, Ljubiša D. R. 1 Leiderman, Arkady G. 1 Li, Changqing 1 Lin, Kaixiong 1 Lin, Lihua 1 Lin, Yidong 1 Lin, Yujin 1 Liu, Xiaolan 1 Lukács, Gábor 1 Ma, Chunjie 1 Martínez-Cadena, Juan Alberto 1 Meyliev, Sh. U. 1 Mukhamadiev, Farkhod G. 1 Noreen, Rafaqat 1 Pal, Sudip Kumar 1 Panyanak, Bancha 1 Peng, Dekui 1 Phudolsitthiphat, Narawadee 1 Ping, Zheng 1 Repovš, Dušan D. 1 Sadullaev, Anvar K. 1 Safarova, D. T. 1 Samanta, Upasana 1 Smolin, Vlad 1 Song, Yankui 1 Szewczak, Piotr 1 Tamariz-Mascarúa, Angel 1 Teh, Wen Chean 1 Truc, Nguzen X. 1 Tsaban, Boaz 1 Tuan, Phan Duc 1 Van Tuyen, Ong 1 Vicenta Ferrer, M. 1 Wang, Bo 1 Wang, Zhongli ...and 8 more Authors all top 5 Cited in 33 Serials 84 Topology and its Applications 5 Houston Journal of Mathematics 4 Applied General Topology 3 Bulletin of the Iranian Mathematical Society 3 Open Mathematics 2 Rocky Mountain Journal of Mathematics 2 Commentationes Mathematicae Universitatis Carolinae 2 Semigroup Forum 2 Filomat 2 Journal of Mathematical Study 2 Bulletin of the Malaysian Mathematical Sciences Society. Second Series 2 Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A: Matemáticas. RACSAM 2 Korean Journal of Mathematics 1 Bulletin of the Australian Mathematical Society 1 Ukrainian Mathematical Journal 1 Fasciculi Mathematici 1 Fundamenta Mathematicae 1 Information Sciences 1 Journal of Mathematical Psychology 1 Proceedings of the American Mathematical Society 1 Publications de l’Institut Mathématique. Nouvelle Série 1 Acta Mathematica Hungarica 1 Annals of Pure and Applied Logic 1 Indagationes Mathematicae. New Series 1 Applied Mathematics. Series B (English Edition) 1 Turkish Journal of Mathematics 1 Mathematica Moravica 1 Lobachevskii Journal of Mathematics 1 Journal of Fixed Point Theory and Applications 1 Banach Journal of Mathematical Analysis 1 Journal of Mathematical Research with Applications 1 Topological Algebra and its Applications 1 Cogent Mathematics & Statistics all top 5 Cited in 16 Fields 128 General topology (54-XX) 67 Topological groups, Lie groups (22-XX) 12 Group theory and generalizations (20-XX) 9 Sequences, series, summability (40-XX) 7 Functional analysis (46-XX) 6 Category theory; homological algebra (18-XX) 6 Real functions (26-XX) 4 Number theory (11-XX) 3 Order, lattices, ordered algebraic structures (06-XX) 2 Mathematical logic and foundations (03-XX) 2 Game theory, economics, finance, and other social and behavioral sciences (91-XX) 1 Combinatorics (05-XX) 1 General algebraic systems (08-XX) 1 Convex and discrete geometry (52-XX) 1 Statistics (62-XX) 1 Computer science (68-XX) Citations by Year