@article{GEA_1975-1976__1__A8_0,
     author = {Clifford, Alfred H.},
     title = {The system of idempotents of a regular semigroup},
     journal = {Groupe d'\'etude d'alg\`ebre},
     note = {talk:8},
     pages = {1--14},
     publisher = {Secr\'etariat math\'ematique},
     volume = {1},
     year = {1975-1976},
     zbl = {0379.20051},
     language = {en},
     url = {http://www.numdam.org/item/GEA_1975-1976__1__A8_0/}
}