Markov Sergei Nikolaevich

Publications in Math-Net.Ru

1. On the behavior of solutions of second order systems of general form in the real domain
   
   Differ. Uravn., 27:6 (1991),  1086–1087
2. Singularities of solutions of second-order systems in a real domain
   
   Differ. Uravn., 19:11 (1983),  1993–1995
3. Singularities of solutions of second-order equations in a real domain
   
   Differ. Uravn., 17:4 (1981),  741–743