Voir la notice de l'article provenant de la source Novi sad journal of mathematics website
@article{NSJOM_2000_30_1a_9, author = {R. To\v{s}i\'c and L. \v{C}omi\'c}, title = {On set-valued non-boolean functions}, journal = {Novi Sad Journal of Mathematics}, pages = {79-88}, publisher = {mathdoc}, volume = {30}, number = {1}, year = {2000}, url = {http://geodesic.mathdoc.fr/item/NSJOM_2000_30_1a_9/} }
R. Tošić; L. Čomić. On set-valued non-boolean functions. Novi Sad Journal of Mathematics, Tome 30 (2000) no. 1. http://geodesic.mathdoc.fr/item/NSJOM_2000_30_1a_9/