@article{10_4064_ap109_1_4,
     author = {Honghui Yin and Mei Xu},
     title = {Existence of three solutions for
 a {Navier} boundary value problem
 involving the $p(x)$-biharmonic operator},
     journal = {Annales Polonici Mathematici},
     pages = {47--58},
     publisher = {mathdoc},
     volume = {109},
     number = {1},
     year = {2013},
     doi = {10.4064/ap109-1-4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap109-1-4/}
}