@article{ASNSP_1976_4_3_3_377_0,
     author = {Beir\~ao Da Veiga, H.},
     title = {Existence of strong solutions for a class of nonlinear partial differential equations satisfying nonlinear boundary conditions},
     journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze},
     pages = {377--404},
     publisher = {Scuola normale superiore},
     volume = {Ser. 4, 3},
     number = {3},
     year = {1976},
     mrnumber = {430883},
     zbl = {0344.35039},
     language = {en},
     url = {http://www.numdam.org/item/ASNSP_1976_4_3_3_377_0/}
}