Katkov Mikhail L'vovich

Publications in Math-Net.Ru

1. Concept extension for concave operator
   
   Vestn. Yuzhno-Ural. Gos. Un-ta. Ser. Matem. Mekh. Fiz., 6:1 (2014),  28–29
2. Existence of the fixed point in the case of evenly contractive monotonic operator
   
   Vestn. Yuzhno-Ural. Gos. Un-ta. Ser. Matem. Mekh. Fiz., 5:2 (2013),  160–161