Voir la notice de l'article provenant de la source Novi sad journal of mathematics website
@article{NSJOM_1991_21_1a_8, author = {Popa Valeriu}, title = {Fixed points on two complete metric spaces}, journal = {Novi Sad Journal of Mathematics}, pages = {83-93}, publisher = {mathdoc}, volume = {21}, number = {1}, year = {1991}, url = {http://geodesic.mathdoc.fr/item/NSJOM_1991_21_1a_8/} }
Popa Valeriu. Fixed points on two complete metric spaces. Novi Sad Journal of Mathematics, Tome 21 (1991) no. 1. http://geodesic.mathdoc.fr/item/NSJOM_1991_21_1a_8/