@article{PORMA_2004__61_2_51276,
     author = {Ibrahim, A.G. and Alkulaibi, K.S.},
     title = {On the existence of monotone solutions for second-order non-convex differential inclusions in infinite dimensional spaces.},
     journal = {Portugaliae mathematica},
     pages = {231--248},
     publisher = {mathdoc},
     volume = {61},
     number = {2},
     year = {2004},
     zbl = {1062.34062},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_2004__61_2_51276/}
}