1. Perfect codes with distinctive protective radii;Akker;Discrete Math.,1990
2. Remark on uniformly packed codes;Bassalygo;Probl. Pered. Inform.,1977
3. Remark on uniformly packed codes;Bassalygo;Russian. English transl. Probl. Inform. Transm.,1977
4. Distance regular graphs;Brouwer,1989
5. Feasibility conditions for the existence of walk-regular graphs;Godsil;Lin. Alg. Appl.,1980