Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{MASLO_1992__42_2_a6, author = {Fe\v{c}kan, Michal}, title = {On a theorem of {L.} {Lefton}}, journal = {Mathematica slovaca}, pages = {195--200}, publisher = {mathdoc}, volume = {42}, number = {2}, year = {1992}, mrnumber = {1170103}, zbl = {0756.34028}, language = {en}, url = {http://geodesic.mathdoc.fr/item/MASLO_1992__42_2_a6/} }
Fečkan, Michal. On a theorem of L. Lefton. Mathematica slovaca, Tome 42 (1992) no. 2, pp. 195-200. http://geodesic.mathdoc.fr/item/MASLO_1992__42_2_a6/