| Toposym 1:  | 
 Proceedings of the 1st conference, Prague, 1961
 | 
| Toposym 2:  | 
 Proceedings of the 2nd conference, Prague, 1966
 | 
| Toposym Kanpur:  | 
 Proceedings of the conference, Kanpur, 1968
 | 
| Toposym 3:  | 
 Proceedings of the 3d conference, Prague, 1971
 | 
| Toposym 4-A:  | 
 Proceedings of the 4th conference, Prague, 1976. Part A: Invited papers
 | 
| Toposym 4-B:  | 
 Proceedings of the 4th conference, Prague, 1976. Part B: Contributed Papers
 |