Voir la notice de l'article provenant de la source Novi sad journal of mathematics website
@article{NSJOM_2005_35_1a_2, author = {S. Ili\'c and B. Janeva and N. Celakoski}, title = {Free {Biassociative} {Groupoids}}, journal = {Novi Sad Journal of Mathematics}, pages = {15-23}, publisher = {mathdoc}, volume = {35}, number = {1}, year = {2005}, url = {http://geodesic.mathdoc.fr/item/NSJOM_2005_35_1a_2/} }
S. Ilić; B. Janeva; N. Celakoski. Free Biassociative Groupoids. Novi Sad Journal of Mathematics, Tome 35 (2005) no. 1. http://geodesic.mathdoc.fr/item/NSJOM_2005_35_1a_2/