@article{CMUC_1981_22_2_a4,
     author = {Le Van Hot},
     title = {On the differentiability of multivalued mappings. {I}},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {267--280},
     year = {1981},
     volume = {22},
     number = {2},
     mrnumber = {620362},
     zbl = {0465.47042},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1981_22_2_a4/}
}