@article{SF_1971__2_133811,
     author = {T. Merlier},
     title = {Sur les demi-groupes r\'eticul\'es et les {O-demi-groupes.}},
     journal = {Semigroup forum},
     pages = {64--70},
     publisher = {mathdoc},
     volume = {2},
     year = {1971},
     zbl = {0224.06009},
     url = {http://geodesic.mathdoc.fr/item/SF_1971__2_133811/}
}