Bayasgalan B

Publications in Math-Net.Ru

1. Decidability of elementary theories of lattices of subsemigroups
   
   Sibirsk. Mat. Zh., 31:1 (1990),  27–33
2. Decidability of theories of classes of powers of semigroups
   
   Izv. Vyssh. Uchebn. Zaved. Mat., 1988, no. 11,  62–64