Hedrlín Zdeněk

Publications in Math-Net.Ru

1. Commutative systems as generalized semigroups
   
   Dokl. Akad. Nauk SSSR, 164:3 (1965),  483–486
2. On the representation of small categories
   
   Dokl. Akad. Nauk SSSR, 160:2 (1965),  284–286