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Mathematische Nachrichten > 296 > 2 > 534 - 551
Russian Mathematics > 2019 > 63 > 1 > 24-34
Russian Mathematics > 2018 > 62 > 11 > 28-44
Mathematical Notes > 2018 > 103 > 1-2 > 75-88
Russian Mathematics > 2018 > 62 > 3 > 34-44
Lobachevskii Journal of Mathematics > 2018 > 39 > 2 > 195-199
Periodica Mathematica Hungarica > 2018 > 77 > 2 > 209-223
Mathematische Nachrichten > 290 > 17-18 > 3020 - 3028
Journal of Fixed Point Theory and Applications > 2017 > 19 > 4 > 2985-3012
Siberian Mathematical Journal > 2017 > 58 > 3 > 476-492
Russian Mathematics > 2017 > 61 > 1 > 22-38
Acta Mathematica Sinica, English Series > 2017 > 33 > 6 > 775-792
Mathematical Notes > 2016 > 100 > 3-4 > 429-437
Russian Mathematics > 2016 > 60 > 10 > 67-71
Topology and its Applications > 2016 > 211 > C > 11-23
Mathematische Nachrichten > 289 > 8-9 > 920 - 949
Topology and its Applications > 2016 > 202 > C > 70-79
Operator Theory: Advances and Applications > Recent Advances in Operator Theory and Applications > 237-247