@article{SF_1989__39_2_134993,
     author = {L. Cottin},
     title = {A functional treatment of right invariant holoids.},
     journal = {Semigroup forum},
     pages = {311--322},
     publisher = {mathdoc},
     volume = {39},
     number = {2},
     year = {1989},
     zbl = {0682.06009},
     url = {http://geodesic.mathdoc.fr/item/SF_1989__39_2_134993/}
}