Kruming P D

Publications in Math-Net.Ru

1. Homological and cohomological characteristics of generalized periodic semigroups
   
   Izv. Vyssh. Uchebn. Zaved. Mat., 1982, no. 5,  30–34
2. Lattice-ordered semigroups
   
   Izv. Vyssh. Uchebn. Zaved. Mat., 1964, no. 6,  78–87