Groups of binary relations.
Plemmons, R.J. ; Schein, B.M.
Semigroup forum, Tome 1 (1970), p. 267-271 / Harvested from Göttinger Digitalisierungszentrum
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Publié le : 1970-01-01
EUDML-ID : urn:eudml:doc:133800 
@article{GDZPPN001247271,
     title = {Groups of binary relations.},
     journal = {Semigroup forum},
     volume = {1},
     year = {1970},
     pages = {267-271},
     zbl = {0211.03901},
     url = {http://dml.mathdoc.fr/item/GDZPPN001247271}
}

Plemmons, R.J.; Schein, B.M. Groups of binary relations.. Semigroup forum, Tome 1 (1970) pp. 267-271. http://gdmltest.u-ga.fr/item/GDZPPN001247271/