@article{RCM_2006_40_1_a0,
     author = {Abdel Rachid El Amrouss},
     title = {Variantes du principe variationnel {d'Ekeland} et applications},
     journal = {Revista colombiana de matematicas},
     pages = {1--14},
     publisher = {mathdoc},
     volume = {40},
     number = {1},
     year = {2006},
     url = {http://geodesic.mathdoc.fr/item/RCM_2006_40_1_a0/}
}