@article{10_4153_CJM_1992_054_0,
     author = {Violette, Donald and Fournier, Gilles},
     title = {Fixed {Point} {Principles} for {Cones} of a {Banach} {Space} for the {Multivalued} {Maps} {Differentiable} at the {Origin} and {Infinity}},
     journal = {Canadian journal of mathematics},
     pages = {888--896},
     year = {1992},
     volume = {44},
     number = {4},
     doi = {10.4153/CJM-1992-054-0},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1992-054-0/}
}