Voir la notice de l'article provenant de la source Novi sad journal of mathematics website
@article{NSJOM_1993_23_1a_4, author = {Ruiz S\'anchez L. M.}, title = {On {Buchwalter} and {Schmets{\textquoteright}} theorems}, journal = {Novi Sad Journal of Mathematics}, pages = {51-55}, publisher = {mathdoc}, volume = {23}, number = {1}, year = {1993}, url = {http://geodesic.mathdoc.fr/item/NSJOM_1993_23_1a_4/} }
Ruiz Sánchez L. M. On Buchwalter and Schmets’ theorems. Novi Sad Journal of Mathematics, Tome 23 (1993) no. 1. http://geodesic.mathdoc.fr/item/NSJOM_1993_23_1a_4/