@article{1138843766, author = {Yamada, Miyuki}, title = {Compositions of semigroups}, journal = {Kodai Math. Sem. Rep.}, volume = {8}, number = {1}, year = {1956}, pages = { 107-111}, language = {en}, url = {http://dml.mathdoc.fr/item/1138843766} }
Yamada, Miyuki. Compositions of semigroups. Kodai Math. Sem. Rep., Tome 8 (1956) no. 1, pp. 107-111. http://gdmltest.u-ga.fr/item/1138843766/