TY  - RPRT
TI  - Construction of some hypergroups from combinatorial structures.
AU  - Ali Reza Ashrafi
AU  - Ahmad Reza Eslami-Harandi
DO  - 10.1631/jzus.2003.0076
UR  - https://pubmed.ncbi.nlm.nih.gov/12656347/
ID  - 12656347
ER  -