Vasylyshyn, P. B.; Vlasiĭ, O. D.; Goĭ, T. P.; Zagorodnyuk, A. V.; Zators’kyĭ, R. A.; Kazmerchuk, A. I.; Kopach, M. I.; Mazurenko, V. V.; Makhneĭ, O. V.; Malyts’ka, G. P.; Nykyforchyn, O. R.; Osypchuk, M. M.; Pylypiv, V. M.; Savka, I. Ya.; Symotyuk, M. M.; Filevych, P. V.; Sharyn, S. V. Bogdan Yosypovych Ptashnyk (obituary). (Ukrainian) Zbl 1372.01067 Carpathian Math. Publ. 9, No. 1, 104-106 (2017). MSC: 01A70 PDFBibTeX XMLCite \textit{P. B. Vasylyshyn} et al., Carpathian Math. Publ. 9, No. 1, 104--106 (2017; Zbl 1372.01067) Full Text: DOI Link
Artemovich, O. D.; Banakh, T. O.; Bondarenko, V. M.; Bodnarchuk, Yu. V.; Gavrylkiv, V. M.; Hanyushkin, O. H.; Huran, Y. I.; Drozd, Yu. A.; Zagorodnyuk, A. V.; Zarichnyi, M. M.; Zatorskyi, R. A.; Kyrychenko, V. V.; Kyrychenko, V. V.; Kyrchej, I. I.; Maslyuchenko, V. K.; Mikityuk, I. V.; Nekrashevich, V. V.; Nikiforchin, O. R.; Petravchuk, A. P.; Petrichkovich, V. M.; Pilipiv, V. M.; Sushchans’kij, V. I.; Filevich, P. V.; Cherevko, I. M.; Sharin, S. V.; Sharko, V. V. Grigorchuk Rostislav Ivanovich – 60th anniversary. (Ukrainian) Zbl 1391.01033 Carpathian Math. Publ. 5, No. 1, 164-165 (2013). MSC: 01A70 PDFBibTeX XMLCite \textit{O. D. Artemovich} et al., Carpathian Math. Publ. 5, No. 1, 164--165 (2013; Zbl 1391.01033)