@article{ASNSP_1977_4_4_2_343_0,
     author = {Frehse, Jens},
     title = {On {Signorini's} problem and variational problems with thin obstacles},
     journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze},
     pages = {343--362},
     publisher = {Scuola normale superiore},
     volume = {Ser. 4, 4},
     number = {2},
     year = {1977},
     mrnumber = {509085},
     zbl = {0353.49020},
     language = {en},
     url = {http://archive.numdam.org/item/ASNSP_1977_4_4_2_343_0/}
}