Sovertkov P I

Publications in Math-Net.Ru

1. Об опыте преподавания геометрии Лобачевского
   
   In mem. Lobatschevskii, 3:2 (1995),  28–33
2. The generalized Christoffel problem in a pseudo-Euclidean space $E_{n-1,1}$
   
   Izv. Vyssh. Uchebn. Zaved. Mat., 1983, no. 6,  64–67
3. Christoffel problem in pseudo-Euclidean space $E_{n-1,1}$
   
   Mat. Zametki, 30:5 (1981),  737–748