Duzhin Fedor Sergeevich

Publications in Math-Net.Ru

1. Lower bounds on the number of closed trajectories of generalized billiards
   
   Zap. Nauchn. Sem. POMI, 325 (2005),  113–126
2. Сколько есть периодических траекторий у трехмерного биллиардах?
   
   Mat. Pros., Ser. 3, 5 (2001),  136
3. On the number of topological types of plane curves
   
   Uspekhi Mat. Nauk, 53:3(321) (1998),  197–198