Voir la notice de l'article provenant de la source Math-Net.Ru
@article{ADM_2009_1_a5, author = {B. J. Gardner and M. M. Parmenter}, title = {Some classes of directoid groups}, journal = {Algebra and discrete mathematics}, pages = {44--58}, publisher = {mathdoc}, number = {1}, year = {2009}, language = {en}, url = {http://geodesic.mathdoc.fr/item/ADM_2009_1_a5/} }
B. J. Gardner; M. M. Parmenter. Some classes of directoid groups. Algebra and discrete mathematics, no. 1 (2009), pp. 44-58. http://geodesic.mathdoc.fr/item/ADM_2009_1_a5/