Tychinina S E

Publications in Math-Net.Ru

1. Stratifiable pairs of congruences of planes in $P_5$
   
   Izv. Vyssh. Uchebn. Zaved. Mat., 1968, no. 4,  77–86
2. $T$ pairs of congruences of planes in $P_5$
   
   Izv. Vyssh. Uchebn. Zaved. Mat., 1968, no. 3,  104–112