Voir la notice de l'article provenant de la source Novi sad journal of mathematics website
@article{NSJOM_2004_34_1a_10, author = {D. Ma\v{s}ulovi\'c}, title = {Turning retractions of an algebra into an algebra}, journal = {Novi Sad Journal of Mathematics}, pages = {89-98}, publisher = {mathdoc}, volume = {34}, number = {1}, year = {2004}, url = {http://geodesic.mathdoc.fr/item/NSJOM_2004_34_1a_10/} }
D. Mašulović. Turning retractions of an algebra into an algebra. Novi Sad Journal of Mathematics, Tome 34 (2004) no. 1. http://geodesic.mathdoc.fr/item/NSJOM_2004_34_1a_10/