Plemmons, R.J., and Schein, B.M.. "Groups of binary relations.." Semigroup forum 1 (1970): 267-271. <http://eudml.org/doc/133800>.
@article{Plemmons1970, author = {Plemmons, R.J., Schein, B.M.}, journal = {Semigroup forum}, pages = {267-271}, title = {Groups of binary relations.}, url = {http://eudml.org/doc/133800}, volume = {1}, year = {1970}, }
TY - JOUR AU - Plemmons, R.J. AU - Schein, B.M. TI - Groups of binary relations. JO - Semigroup forum PY - 1970 VL - 1 SP - 267 EP - 271 UR - http://eudml.org/doc/133800 ER -
