- Barlotti, A. (Adriano), 1923- (4)
- Tallini, G. (Giuseppe), 1930- (2)
- Ceccherini, P. V. (Pier Vittorio), 1940- (1)
- Conference on Combinatorics (1)
- Ellers, E. W (1)
- International Conference on Combinatorial Geometrics and their Applications (1)
- International Conference on Incidence Geometries and Combinatorial Structures (1)
- Marchi, Mario (1)
- NATO Advanced Study Institute on Generators and Relations in Groups and Geometries (1)
- Plaumann, Peter (1)
- Segre, Beniamino, 1903- (1)
- Strambach, Karl (1)