@article{ASNSP_1978_4_5_4_679_0,
     author = {Dugundji, J. and Granas, A.},
     title = {KKM maps and variational inequalities},
     journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze},
     pages = {679--682},
     publisher = {Scuola normale superiore},
     volume = {Ser. 4, 5},
     number = {4},
     year = {1978},
     mrnumber = {519889},
     zbl = {0396.47037},
     language = {en},
     url = {http://www.numdam.org/item/ASNSP_1978_4_5_4_679_0/}
}