Voir la notice de l'article provenant de la source Novi sad journal of mathematics website
@article{NSJOM_1988_18_1a_6, author = {Acketa Dragan M.}, title = {All interval greedoids on at most 5 elements}, journal = {Novi Sad Journal of Mathematics}, pages = {69-76}, publisher = {mathdoc}, volume = {18}, number = {1}, year = {1988}, url = {http://geodesic.mathdoc.fr/item/NSJOM_1988_18_1a_6/} }
Acketa Dragan M. All interval greedoids on at most 5 elements. Novi Sad Journal of Mathematics, Tome 18 (1988) no. 1. http://geodesic.mathdoc.fr/item/NSJOM_1988_18_1a_6/