@article{10_4064_ap109_1_5,
     author = {Nemat Nyamoradi},
     title = {Multiplicity results for a class of fractional
 boundary value problems},
     journal = {Annales Polonici Mathematici},
     pages = {59--73},
     publisher = {mathdoc},
     volume = {109},
     number = {1},
     year = {2013},
     doi = {10.4064/ap109-1-5},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap109-1-5/}
}