Shapovalov Sergey Andreevich

Publications in Math-Net.Ru

1. The depth invariant for group actions on countable phase spaces
   
   Mat. Zametki, 65:6 (1999),  893–907
2. Conjugacy of symbolic dynamical systems with an at most countable phase space
   
   Vestnik Moskov. Univ. Ser. 1. Mat. Mekh., 1997, no. 3,  35–39