Monoids of languages admitting ring structures.
Shyr, H.J. ; Chu, D.C.
Semigroup forum, Tome 20 (1980), p. 127-132 / Harvested from Göttinger Digitalisierungszentrum
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Publié le : 1980-01-01
EUDML-ID : urn:eudml:doc:134377 
@article{GDZPPN001253735,
     title = {Monoids of languages admitting ring structures.},
     journal = {Semigroup forum},
     volume = {20},
     year = {1980},
     pages = {127-132},
     zbl = {0435.20045},
     url = {http://dml.mathdoc.fr/item/GDZPPN001253735}
}

Shyr, H.J.; Chu, D.C. Monoids of languages admitting ring structures.. Semigroup forum, Tome 20 (1980) pp. 127-132. http://gdmltest.u-ga.fr/item/GDZPPN001253735/