Kusraev, A. G.; Kutateladze, S. S. Boolean valued analysis of Banach algebras. (English) Zbl 07729659 Sib. Math. J. 64, No. 4, 1001-1034 (2023). MSC: 46L05 46H70 03C90 PDFBibTeX XMLCite \textit{A. G. Kusraev} and \textit{S. S. Kutateladze}, Sib. Math. J. 64, No. 4, 1001--1034 (2023; Zbl 07729659) Full Text: DOI
Palchunov, D. E.; Trofimov, A. V. The theories of superatomic Boolean algebras with distinguished subalgebra which lack countably saturated models. (English. Russian original) Zbl 1481.03017 Sib. Math. J. 61, No. 3, 516-527 (2020); translation from Sib. Mat. Zh. 61, No. 3, 654-668 (2020). MSC: 03C50 06E05 PDFBibTeX XMLCite \textit{D. E. Palchunov} and \textit{A. V. Trofimov}, Sib. Math. J. 61, No. 3, 516--527 (2020; Zbl 1481.03017); translation from Sib. Mat. Zh. 61, No. 3, 654--668 (2020) Full Text: DOI
Leontyeva, M. N. Relatively intrinsically computable relations on Boolean algebras with a distinguished set of atoms. (English. Russian original) Zbl 1481.03018 Sib. Math. J. 61, No. 3, 490-498 (2020); translation from Sib. Mat. Zh. 61, No. 3, 622-633 (2020). MSC: 03C57 06E05 PDFBibTeX XMLCite \textit{M. N. Leontyeva}, Sib. Math. J. 61, No. 3, 490--498 (2020; Zbl 1481.03018); translation from Sib. Mat. Zh. 61, No. 3, 622--633 (2020) Full Text: DOI
Kusraev, A. G.; Kutateladze, S. S. Two applications of Boolean valued analysis. (English. Russian original) Zbl 1446.46002 Sib. Math. J. 60, No. 5, 902-910 (2019); translation from Sib. Mat. Zh. 60, No. 5, 1153-1164 (2019). MSC: 46A40 46B42 06E99 PDFBibTeX XMLCite \textit{A. G. Kusraev} and \textit{S. S. Kutateladze}, Sib. Math. J. 60, No. 5, 902--910 (2019; Zbl 1446.46002); translation from Sib. Mat. Zh. 60, No. 5, 1153--1164 (2019) Full Text: DOI arXiv
Malcev, I. A. Properties of the quasilinear clones containing creative functions. (English. Russian original) Zbl 1373.08003 Sib. Math. J. 58, No. 4, 644-648 (2017); translation from Sib. Mat. Zh. 58, No. 4, 828-833 (2017). MSC: 08A40 06E30 PDFBibTeX XMLCite \textit{I. A. Malcev}, Sib. Math. J. 58, No. 4, 644--648 (2017; Zbl 1373.08003); translation from Sib. Mat. Zh. 58, No. 4, 828--833 (2017) Full Text: DOI
Pal’chunov, D. E.; Trofimov, A. V. Finitely-axiomatizable superatomic Boolean algebras with distinguished dense subalgebra of finite width. (English. Russian original) Zbl 1403.06021 Sib. Math. J. 57, No. 6, 1066-1076 (2016); translation from Sib. Mat. Zh. 57, No. 6, 1361-1375 (2016). MSC: 06E25 03C50 03C60 03B25 06E05 PDFBibTeX XMLCite \textit{D. E. Pal'chunov} and \textit{A. V. Trofimov}, Sib. Math. J. 57, No. 6, 1066--1076 (2016; Zbl 1403.06021); translation from Sib. Mat. Zh. 57, No. 6, 1361--1375 (2016) Full Text: DOI
Pal’chunov, D. E.; Trofimov, A. V.; Turko, A. I. Autostability relative to strong constructivizations of Boolean algebras with distinguished ideals. (English. Russian original) Zbl 1347.03070 Sib. Math. J. 56, No. 3, 490-498 (2015); translation from Sib. Mat. Zh. 56, No. 3, 617-628 (2015). MSC: 03C57 03C50 03G05 06E05 PDFBibTeX XMLCite \textit{D. E. Pal'chunov} et al., Sib. Math. J. 56, No. 3, 490--498 (2015; Zbl 1347.03070); translation from Sib. Mat. Zh. 56, No. 3, 617--628 (2015) Full Text: DOI
Goncharov, S. S.; Bazhenov, N. A.; Marchuk, M. I. The index set of Boolean algebras autostable relative to strong constructivizations. (English. Russian original) Zbl 1328.03036 Sib. Math. J. 56, No. 3, 393-404 (2015); translation from Sib. Mat. Zh. 56, No. 3, 498-512 (2015). MSC: 03C57 03D45 03C15 06E05 PDFBibTeX XMLCite \textit{S. S. Goncharov} et al., Sib. Math. J. 56, No. 3, 393--404 (2015; Zbl 1328.03036); translation from Sib. Mat. Zh. 56, No. 3, 498--512 (2015) Full Text: DOI
Kusraev, A. G.; Kutateladze, S. S. On order bounded disjointness preserving operators. (English. Russian original) Zbl 1317.47040 Sib. Math. J. 55, No. 5, 915-928 (2014); translation from Sib. Mat. Zh. 55, No. 5, 915-928 (2014). Reviewer: Ying-Fen Lin (Belfast) MSC: 47B65 03G10 03G05 PDFBibTeX XMLCite \textit{A. G. Kusraev} and \textit{S. S. Kutateladze}, Sib. Math. J. 55, No. 5, 915--928 (2014; Zbl 1317.47040); translation from Sib. Mat. Zh. 55, No. 5, 915--928 (2014) Full Text: DOI
Malcev, I. A. Hyperidentities of quasilinear clones on the three-element set. (English. Russian original) Zbl 1315.08002 Sib. Math. J. 55, No. 2, 284-295 (2014); translation from Sib. Mat. Zh. 55, No. 2, 350-363 (2014). Reviewer: Yuri Movsisyan (Yerevan) MSC: 08A40 03C85 06E30 PDFBibTeX XMLCite \textit{I. A. Malcev}, Sib. Math. J. 55, No. 2, 284--295 (2014; Zbl 1315.08002); translation from Sib. Mat. Zh. 55, No. 2, 350--363 (2014) Full Text: DOI
Leontyeva, M. N. The minimality of certain decidability conditions for Boolean algebras. (English. Russian original) Zbl 1252.03095 Sib. Math. J. 53, No. 1, 106-118 (2012); translation from Sib. Mat. Zh. 53, No. 1, 132-147 (2012). MSC: 03C57 03B25 06E05 PDFBibTeX XMLCite \textit{M. N. Leontyeva}, Sib. Math. J. 53, No. 1, 106--118 (2012; Zbl 1252.03095); translation from Sib. Mat. Zh. 53, No. 1, 132--147 (2012) Full Text: DOI
Kasymkanuly, B. Automorphisms of Boolean algebras which are recursive over atoms. (English. Russian original) Zbl 0924.03058 Sib. Math. J. 40, No. 3, 478-482 (1999); translation from Sib. Mat. Zh. 40, No. 3, 561-566 (1999). Reviewer: A.S.Morozov (Novosibirsk) MSC: 03C57 03D45 06E99 PDFBibTeX XMLCite \textit{B. Kasymkanuly}, Sib. Math. J. 40, No. 3, 561--566 (1999; Zbl 0924.03058); translation from Sib. Mat. Zh. 40, No. 3, 561--566 (1999) Full Text: DOI
Pinus, A. G. On algebras conditionally rationally equivalent to semilattices and Boolean algebras. (English. Russian original) Zbl 0937.08002 Sib. Math. J. 39, No. 1, 106-112 (1998); translation from Sib. Mat. Zh. 39, No. 1, 122-128 (1998). MSC: 08A05 06A12 06E05 PDFBibTeX XMLCite \textit{A. G. Pinus}, Sib. Math. J. 39, No. 1, 122--128 (1998; Zbl 0937.08002); translation from Sib. Mat. Zh. 39, No. 1, 122--128 (1998) Full Text: DOI
Kusraev, A. G. On the structure of \(AJW\)-algebras of type \(I_2\). (English. Russian original) Zbl 0936.46040 Sib. Math. J. 40, No. 4, 764-774 (1999); translation from Sib. Mat. Zh. 40, No. 4, 905-917 (1999). Reviewer: S.S.Kutateladze (Novosibirsk) MSC: 46H70 46S20 17C65 PDFBibTeX XMLCite \textit{A. G. Kusraev}, Sib. Math. J. 40, No. 4, 905--917 (1998; Zbl 0936.46040); translation from Sib. Mat. Zh. 40, No. 4, 905--917 (1999) Full Text: DOI
Kogabaev, N. T. Autostability of Boolean algebras with distinguished ideal. (English. Russian original) Zbl 0913.06011 Sib. Math. J. 39, No. 5, 927-935 (1998); translation from Sib. Mat. Zh. 39, No. 5, 1074-1084 (1998). Reviewer: A.N.Ryaskin (Novosibirsk) MSC: 06E25 03C57 03D45 PDFBibTeX XMLCite \textit{N. T. Kogabaev}, Sib. Math. J. 39, No. 5, 1074--1084 (1998; Zbl 0913.06011); translation from Sib. Mat. Zh. 39, No. 5, 1074--1084 (1998) Full Text: DOI
Denecke, K.; Mal’tsev, I. A.; Reschke, M. On separation of Boolean clones by means of hyperidentities. (English. Russian original) Zbl 0856.08002 Sib. Math. J. 36, No. 5, 902-916 (1995); translation from Sib. Mat. Zh. 36, No. 5, 1049-1066 (1995). Reviewer: D.Busneag (Craiova) MSC: 08A40 06E30 PDFBibTeX XMLCite \textit{K. Denecke} et al., Sib. Math. J. 36, No. 5, 902--916 (1995; Zbl 0856.08002); translation from Sib. Mat. Zh. 36, No. 5, 1049--1066 (1995) Full Text: DOI
Denecke, K.; Mal’tsev, I. A. Separation of clones by means of hyperidentities. (English. Russian original) Zbl 0854.08003 Sib. Math. J. 35, No. 2, 280-285 (1994); translation from Sib. Mat. Zh. 35, No. 2, 310-316 (1994). MSC: 08A40 PDFBibTeX XMLCite \textit{K. Denecke} and \textit{I. A. Mal'tsev}, Sib. Math. J. 35, No. 2, 280--285 (1994; Zbl 0854.08003); translation from Sib. Mat. Zh. 35, No. 2, 310--316 (1994) Full Text: DOI
Kusraev, A. G. Boolean-valued analysis and \(JB\)-algebras. (English. Russian original) Zbl 0832.46045 Sib. Math. J. 35, No. 1, 114-122 (1994); translation from Sib. Mat. Zh. 35, No. 1, 124-134 (1994). Reviewer: B.Aupetit (Quebec) MSC: 46H70 46S20 17C65 PDFBibTeX XMLCite \textit{A. G. Kusraev}, Sib. Math. J. 35, No. 1, 1 (1994; Zbl 0832.46045); translation from Sib. Mat. Zh. 35, No. 1, 124--134 (1994) Full Text: DOI
Dauletbaev, B. K. Determining an atomic Boolean algebra from the action of the automorphism group. (English. Russian original) Zbl 0804.06015 Sib. Math. J. 34, No. 6, 1041-1043 (1993); translation from Sib. Mat. Zh. 34, No. 6, 49-51 (1993). MSC: 06E05 20B27 PDFBibTeX XMLCite \textit{B. K. Dauletbaev}, Sib. Math. J. 34, No. 6, 1041--1043 (1993; Zbl 0804.06015); translation from Sib. Mat. Zh. 34, No. 6, 49--51 (1993) Full Text: DOI
Kusraev, A. G. Functional realization of \(AW^*\)-algebras of type I. (English. Russian original) Zbl 0759.46052 Sib. Math. J. 32, No. 3, 416-424 (1991); translation from Sib. Mat. Zh. 32, No. 3(187), 78-88 (1991). Reviewer: V.Chilin (Tashkent) MSC: 46L10 46H25 46L05 03C90 PDFBibTeX XMLCite \textit{A. G. Kusraev}, Sib. Math. J. 32, No. 3, 416--424 (1991; Zbl 0759.46052); translation from Sib. Mat. Zh. 32, No. 3(187), 78--88 (1991) Full Text: DOI
Muravitskij, A. Yu. Magari and \(\Delta\)-pseudo-Boolean algebras. (English. Russian original) Zbl 0721.06014 Sib. Math. J. 31, No. 4, 623-628 (1990); translation from Sib. Mat. Zh. 31, No. 4(182), 111-117 (1990). Reviewer: L.Esakia (Tbilisi) MSC: 06D20 03G25 03B45 03B20 PDFBibTeX XMLCite \textit{A. Yu. Muravitskij}, Sib. Math. J. 31, No. 4, 623--628 (1990; Zbl 0721.06014); translation from Sib. Mat. Zh. 31, No. 4(182), 111--117 (1990) Full Text: DOI
Malyugin, S. A. Sequential order topologies. (English. Russian original) Zbl 0716.06008 Sib. Math. J. 31, No. 1, 165-168 (1990); translation from Sib. Mat. Zh. 31, No. 1(179), 194-197 (1990). Reviewer: J.Nikiel MSC: 06E10 06F30 28C15 54H12 PDFBibTeX XMLCite \textit{S. A. Malyugin}, Sib. Math. J. 31, No. 1, 165--168 (1990; Zbl 0716.06008); translation from Sib. Mat. Zh. 31, No. 1(179), 194--197 (1990) Full Text: DOI
Odintsov, S. P.; Selivanov, V. L. Arithmetic hierarchy and ideals of enumerated Boolean algebras. (English. Russian original) Zbl 0711.03016 Sib. Math. J. 30, No. 6, 952-960 (1989); translation from Sib. Mat. Zh. 30, No. 6(178), 140-149 (1989). Reviewer: R.Murawski MSC: 03D55 03D45 PDFBibTeX XMLCite \textit{S. P. Odintsov} and \textit{V. L. Selivanov}, Sib. Math. J. 30, No. 6, 952--960 (1989; Zbl 0711.03016); translation from Sib. Mat. Zh. 30, No. 6(178), 140--149 (1989) Full Text: DOI
Maksimova, L. L. Continuum of normal extensions of the modal logic of provability with the interpolation property. (English. Russian original) Zbl 0709.03011 Sib. Math. J. 30, No. 6, 935-944 (1989); translation from Sib. Mat. Zh. 30, No. 6(178), 122-131 (1989). Reviewer: B.Boričić MSC: 03B45 03F40 03C40 06E25 PDFBibTeX XMLCite \textit{L. L. Maksimova}, Sib. Math. J. 30, No. 6, 935--944 (1989; Zbl 0709.03011); translation from Sib. Mat. Zh. 30, No. 6(178), 122--131 (1989) Full Text: DOI EuDML
Dulatova, Z. A. Theory of Boolean algebras with a locally finite group of automorphisms. (English. Russian original) Zbl 0633.03003 Sib. Math. J. 28, No. 3, 424-425 (1987); translation from Sib. Mat. Zh. 28, No. 3(163), 89-90 (1987). Reviewer: L.Esakia MSC: 03B25 03C65 06E99 PDFBibTeX XMLCite \textit{Z. A. Dulatova}, Sib. Math. J. 28, No. 3, 424--425 (1987; Zbl 0633.03003); translation from Sib. Mat. Zh. 28, No. 3(163), 89--90 (1987) Full Text: DOI
Gulamov, R. Decidability of the elementary theory of universal semifields of the second kind. (English. Russian original) Zbl 0626.06019 Sib. Math. J. 27, 344-347 (1986); translation from Sib. Mat. Zh. 27, No. 3(157), 47-50 (1986). Reviewer: S.R.Kogalovskij MSC: 06F25 03C35 12J17 16W80 PDFBibTeX XMLCite \textit{R. Gulamov}, Sib. Math. J. 27, 344--347 (1986; Zbl 0626.06019); translation from Sib. Mat. Zh. 27, No. 3(157), 47--50 (1986) Full Text: DOI
Morozov, A. S. Automorphisms of constructivizations of Boolean algebras. (English. Russian original) Zbl 0613.03017 Sib. Math. J. 26, 555-565 (1986); translation from Sib. Mat. Zh. 26, No. 4(152), 98-110 (1985). Reviewer: R.Gurevič MSC: 03D45 06E99 20B27 03C57 PDFBibTeX XMLCite \textit{A. S. Morozov}, Sib. Math. J. 26, 555--565 (1986; Zbl 0613.03017); translation from Sib. Mat. Zh. 26, No. 4(152), 98--110 (1985) Full Text: DOI
Skornyakov, L. A. Invertible matrices over distributive lattices. (English) Zbl 0609.15001 Sib. Math. J. 27, 289-292 (1986). MSC: 15A09 15A30 20H99 06E20 PDFBibTeX XMLCite \textit{L. A. Skornyakov}, Sib. Math. J. 27, 289--292 (1986; Zbl 0609.15001) Full Text: DOI
Goncharov, S. S. Universal recursively enumerable Boolean algebras. (English. Russian original) Zbl 0552.03026 Sib. Math. J. 24, 852-858 (1983); translation from Sib. Mat. Zh. 24, No. 6(142), 36-43 (1983). Reviewer: R.Sh.Omanadze (Tbilisi) MSC: 03D45 06E99 PDFBibTeX XMLCite \textit{S. S. Goncharov}, Sib. Math. J. 24, 852--858 (1983; Zbl 0552.03026); translation from Sib. Mat. Zh. 24, No. 6(142), 36--43 (1983) Full Text: DOI
Mart’yanov, V. I. Undecidability of the theory of Boolean algebras with automorphism. (English) Zbl 0531.03028 Sib. Math. J. 23, 408-415 (1983). MSC: 03D35 03C65 PDFBibTeX XMLCite \textit{V. I. Mart'yanov}, Sib. Math. J. 23, 408--415 (1983; Zbl 0531.03028) Full Text: DOI
Nedogibchenko, G. V.; Savel’ev, L. Ya. Completely continuous measures. (English) Zbl 0494.28003 Sib. Math. J. 22, 900-913 (1982). MSC: 28A60 28A15 28A12 28C20 PDFBibTeX XMLCite \textit{G. V. Nedogibchenko} and \textit{L. Ya. Savel'ev}, Sib. Math. J. 22, 900--913 (1982; Zbl 0494.28003) Full Text: DOI
Poroshkin, A. G. Normability of Boolean algebras with a continuous exterior measure. (English. Russian original) Zbl 0466.28005 Sib. Math. J. 21, 645-648 (1981); translation from Sib. Mat. Zh. 21, 216-220 (1980). MSC: 28A60 06F20 46A40 28A12 PDFBibTeX XMLCite \textit{A. G. Poroshkin}, Sib. Math. J. 21, 645--648 (1980; Zbl 0466.28005); translation from Sib. Mat. Zh. 21, 216--220 (1980) Full Text: DOI
Savel’ev, L. Ya. Extension of continuous measures. (English) Zbl 0447.28003 Sib. Math. J. 20, 765-771 (1980). MSC: 28A60 28A12 28B10 PDFBibTeX XMLCite \textit{L. Ya. Savel'ev}, Sib. Math. J. 20, 765--771 (1980; Zbl 0447.28003) Full Text: DOI
Pinus, A. G. Theories of Boolean algebras in a calculus with the quantifier ”infinitely many exist”. (English) Zbl 0404.03026 Sib. Math. J. 17(1976), 1035-1038 (1977). MSC: 03C80 06E99 03B30 03B25 PDFBibTeX XMLCite \textit{A. G. Pinus}, Sib. Math. J. 17, 1035--1038 (1977; Zbl 0404.03026) Full Text: DOI
Goncharov, S. S. Restricted theories of constructive Boolean algebras. (English) Zbl 0386.03013 Sib. Math. J. 17(1976), 601-611 (1977). MSC: 03C60 03B25 03F99 06E99 PDFBibTeX XMLCite \textit{S. S. Goncharov}, Sib. Math. J. 17, 601--611 (1977; Zbl 0386.03013) Full Text: DOI
Popov, V. A. Additive and semiadditive functions on Boolean algebras. (English) Zbl 0369.28011 Sib. Math. J. 17, 258-264 (1976). MSC: 28A60 PDFBibTeX XMLCite \textit{V. A. Popov}, Sib. Math. J. 17, 258--264 (1976; Zbl 0369.28011) Full Text: DOI
Poroskin, A. G. Two properties of Boolean algebras with a vector measure. (English. Russian original) Zbl 0363.28010 Sib. Math. J. 16, 259-267 (1975); translation from Sib. Mat. Zh. 16, 336-346 (1975). MSC: 28A60 06E05 28B05 PDFBibTeX XMLCite \textit{A. G. Poroskin}, Sib. Math. J. 16, 259--267 (1975; Zbl 0363.28010); translation from Sib. Mat. Zh. 16, 336--346 (1975) Full Text: DOI
Goncharov, S. S. Some properties of the constructivization of Boolean algebras. (English) Zbl 0326.02033 Sib. Math. J. 16, 203-214 (1975). MSC: 03D99 03F99 06E05 03G05 PDFBibTeX XMLCite \textit{S. S. Goncharov}, Sib. Math. J. 16, 203--214 (1975; Zbl 0326.02033) Full Text: DOI
Kisljakov, S. V. Correction to the paper ’Free subalgebras of complete Boolean algebras and spaces of continuous functions’. (English) Zbl 0324.46021 Sib. Math. J. 16, 322 (1975). MSC: 46E05 06E05 PDFBibTeX XMLCite \textit{S. V. Kisljakov}, Sib. Math. J. 16, 322 (1975; Zbl 0324.46021) Full Text: DOI
Omarov, A. I. Saturation of Boolean algebras. (English. Russian original) Zbl 0311.02059 Sib. Math. J. 15(1974), 1004-1005 (1975); translation from Sib. Mat. Zh. 15, 1414-1415 (1974). MSC: 03C68 03G05 06E05 PDFBibTeX XMLCite \textit{A. I. Omarov}, Sib. Math. J. 15, 1004--1005 (1975; Zbl 0311.02059); translation from Sib. Mat. Zh. 15, 1414--1415 (1974) Full Text: DOI
Veksler, A. I. Topological completeness of Boolean algebras in the sequential order topology. (English. Russian original) Zbl 0336.06009 Sib. Math. J. 14(1973), 503-510 (1974); translation from Sibir. Mat. Zh. 14, 726-737 (1973). MSC: 06F30 06E05 06F20 46A40 54F05 PDFBibTeX XMLCite \textit{A. I. Veksler}, Sib. Math. J. 14, 503--510 (1974; Zbl 0336.06009); translation from Sibir. Mat. Zh. 14, 726--737 (1973) Full Text: DOI
Viten’ko, I. V.; Nikolenko, V. V. An algebra variety. (English) Zbl 0289.02042 Sib. Math. J. 15, 309-311 (1974). MSC: 03G05 08B99 PDFBibTeX XMLCite \textit{I. V. Viten'ko} and \textit{V. V. Nikolenko}, Sib. Math. J. 15, 309--311 (1974; Zbl 0289.02042) Full Text: DOI
Kisljakov, S. V. Free subalgebras of complette Boolean algebras and spaces of continuous functions. (English. Russian original) Zbl 0286.46029 Sib. Math. J. 14(1973), 395-403 (1974); translation from Sib. Mat. Zh. 14, 569-581 (1973). MSC: 46E05 06E05 PDFBibTeX XMLCite \textit{S. V. Kisljakov}, Sib. Math. J. 14, 395--403 (1974; Zbl 0286.46029); translation from Sib. Mat. Zh. 14, 569--581 (1973) Full Text: DOI
Fedorchuk, V. V. Boolean \(\delta\)-algebras and quasiopen mappings. (English) Zbl 0285.54031 Sib. Math. J. 14(1973), 759-767 (1974). MSC: 54H10 54C10 03G05 54D30 PDFBibTeX XMLCite \textit{V. V. Fedorchuk}, Sib. Math. J. 14, 759--767 (1974; Zbl 0285.54031) Full Text: DOI
Fofanova, T. S. Injectivity of polygons over Boolean algebras. (English. Russian original) Zbl 0287.06010 Sib. Math. J. 13, 314-318 (1972); translation from Sib. Mat. Zh. 13, 452-458 (1972). MSC: 06E05 PDFBibTeX XMLCite \textit{T. S. Fofanova}, Sib. Math. J. 13, 314--318 (1972; Zbl 0287.06010); translation from Sib. Mat. Zh. 13, 452--458 (1972) Full Text: DOI
Potepun, L. I. Isomorphism of symmetric linear partially ordered spaces. (English. Russian original) Zbl 0226.46012 Sib. Math. J. 12, 441-446 (1971); translation from Sib. Mat. Zh. 12, 623-629 (1971). MSC: 46A40 28A60 06E05 PDFBibTeX XMLCite \textit{L. I. Potepun}, Sib. Math. J. 12, 441--446 (1971; Zbl 0226.46012); translation from Sib. Mat. Zh. 12, 623--629 (1971) Full Text: DOI