@article{10_4064_sm186_3_2,
     author = {J. H. Qiu and S. Rolewicz},
     title = {Ekeland's variational principle in locally
 $p$-convex spaces and related results},
     journal = {Studia Mathematica},
     pages = {219--235},
     publisher = {mathdoc},
     volume = {186},
     number = {3},
     year = {2008},
     doi = {10.4064/sm186-3-2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm186-3-2/}
}