Trushin G I

Publications in Math-Net.Ru

1. A $\lambda $-conjugate system
   
   Izv. Vyssh. Uchebn. Zaved. Mat., 1962, no. 4,  161–169
2. Third order conjugate systems and the problem of their focal transformations
   
   Dokl. Akad. Nauk SSSR, 131:2 (1960),  265–268