Search results
Demonstratio Mathematica > 2019 > Vol. 52, nr 1 > 410--427
Demonstratio Mathematica > 2014 > Vol. 47, nr 2 > 352--370
Lobachevskii Journal of Mathematics > 2019 > 40 > 10 > 1479-1482
Lobachevskii Journal of Mathematics > 2019 > 40 > 8 > 1102-1112
Mathematical Notes > 2019 > 105 > 5-6 > 641-648
Lobachevskii Journal of Mathematics > 2019 > 40 > 5 > 677-680
Russian Mathematics > 2019 > 63 > 3 > 78-82
Lobachevskii Journal of Mathematics > 2019 > 40 > 4 > 469-478
Lobachevskii Journal of Mathematics > 2018 > 39 > 9 > 1300-1304
Acta Mathematica Sinica, English Series > 2019 > 35 > 3 > 378-390
Functional Analysis and Its Applications > 2018 > 52 > 3 > 186-193
Russian Mathematics > 2018 > 62 > 10 > 37-46
Science China Mathematics > 2018 > 61 > 9 > 1665-1676
Integral Equations and Operator Theory > 2018 > 90 > 4 > 1-42
Russian Mathematics > 2018 > 62 > 7 > 13-30
Theoretical and Mathematical Physics > 2018 > 195 > 1 > 557-562
Russian Mathematics > 2018 > 62 > 5 > 10-15
Russian Mathematics > 2018 > 62 > 2 > 62-68
Russian Mathematics > 2018 > 62 > 2 > 7-18