@article{ASNSP_1976_4_3_1_47_0,
     author = {Friedman, Avner and Jensen, Robert},
     title = {Elliptic quasi-variational inequalities and application to a non-stationary problem in hydraulics},
     journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze},
     pages = {47--88},
     publisher = {Scuola normale superiore},
     volume = {Ser. 4, 3},
     number = {1},
     year = {1976},
     mrnumber = {402266},
     zbl = {0322.35025},
     language = {en},
     url = {http://www.numdam.org./item/ASNSP_1976_4_3_1_47_0/}
}