Quasisymmetric block designs. (English) Zbl 0251.05009
Combinat. Struct. Appl., Proc. Calgary internat. Conf. combinat. Struct. Appl., Calgary 1969, 111-116 (1970).
MSC:
05B05 | Combinatorial aspects of block designs |
05Cxx | Graph theory |
05-02 | Research exposition (monographs, survey articles) pertaining to combinatorics |