Voir la notice de l'article provenant de la source Novi sad journal of mathematics website
@article{NSJOM_2010_40_2a_12, author = {Stojan Bogdanovi\\'c, and \v{Z}arko Popovi\'c, and Miroslav \'Ciri\'c}, title = {On {Lallement's} lemma}, journal = {Novi Sad Journal of Mathematics}, pages = {3-9}, publisher = {mathdoc}, volume = {40}, number = {2}, year = {2010}, url = {http://geodesic.mathdoc.fr/item/NSJOM_2010_40_2a_12/} }
Stojan Bogdanovi\ć,; Žarko Popović,; Miroslav Ćirić. On Lallement's lemma. Novi Sad Journal of Mathematics, Tome 40 (2010) no. 2. http://geodesic.mathdoc.fr/item/NSJOM_2010_40_2a_12/