Voir la notice de l'article provenant de la source Novi sad journal of mathematics website
@article{NSJOM_2000_30_3a_12, author = {A. Popovi\'c and M. Ivanovi\'c}, title = {A truly polymorphic number class hierarchy}, journal = {Novi Sad Journal of Mathematics}, pages = {123-130}, publisher = {mathdoc}, volume = {30}, number = {3}, year = {2000}, url = {http://geodesic.mathdoc.fr/item/NSJOM_2000_30_3a_12/} }
A. Popović; M. Ivanović. A truly polymorphic number class hierarchy. Novi Sad Journal of Mathematics, Tome 30 (2000) no. 3. http://geodesic.mathdoc.fr/item/NSJOM_2000_30_3a_12/