@article{10_4064_am41_2_4,
     author = {Elhoussine Azroul and Meryem El Lekhlifi and Badr Lahmi and Abdelfattah Touzani},
     title = {On a necessary condition in the calculus
 of variations in {Sobolev} spaces
 with variable exponent},
     journal = {Applicationes Mathematicae},
     pages = {165--174},
     publisher = {mathdoc},
     volume = {41},
     number = {2-3},
     year = {2014},
     doi = {10.4064/am41-2-4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/am41-2-4/}
}