Voir la notice de l'article provenant de la source Novi sad journal of mathematics website
@article{NSJOM_1980_10_Nonea_24, author = {To\v{s}i\'c Ratko}, title = {On the class of constant-preserving {Boolean} functions over the finite {Bollean} algebras}, journal = {Novi Sad Journal of Mathematics}, pages = {197-203}, publisher = {mathdoc}, volume = {10}, year = {1980}, url = {http://geodesic.mathdoc.fr/item/NSJOM_1980_10_Nonea_24/} }
Tošić Ratko. On the class of constant-preserving Boolean functions over the finite Bollean algebras. Novi Sad Journal of Mathematics, Tome 10 (1980). http://geodesic.mathdoc.fr/item/NSJOM_1980_10_Nonea_24/