@article{GEA_1975-1976__1__A20_0,
     author = {Blyth, Thomas S.},
     title = {Demi-groupes orthodoxes scind\'es},
     journal = {Groupe d'\'etude d'alg\`ebre},
     note = {talk:20},
     pages = {1--7},
     publisher = {Secr\'etariat math\'ematique},
     volume = {1},
     year = {1975-1976},
     zbl = {0376.20037},
     language = {fr},
     url = {http://archive.numdam.org/item/GEA_1975-1976__1__A20_0/}
}