@article{1103040101, author = {Kimura, Naoki}, title = {The structure of idempotent semigroups. I.}, journal = {Pacific J. Math.}, volume = {8}, number = {4}, year = {1958}, pages = { 257-275}, language = {en}, url = {http://dml.mathdoc.fr/item/1103040101} }
Kimura, Naoki. The structure of idempotent semigroups. I.. Pacific J. Math., Tome 8 (1958) no. 4, pp. 257-275. http://gdmltest.u-ga.fr/item/1103040101/