Bautin Aleksandr Nikolaevich

Publications in Math-Net.Ru

1. On bifurcations in the splitting of a complex equilibrium state with two zero roots into simple states
   
   Dokl. Akad. Nauk SSSR, 264:4 (1982),  784–787
2. On the small parameter method
   
   Dokl. Akad. Nauk SSSR, 240:2 (1978),  253–256