Usenko Vitaliy Mikhaylovich

Publications in Math-Net.Ru

1. Special issue devoted to Professor Yuriy Drozd (on the occasion of his 60th birthday)
   
   Algebra Discrete Math., 2005, no. 1,  E–G
2. R. I. Grigorchuk (his 50th birthday)
   
   Algebra Discrete Math., 2003, no. 4,  E–F