@article{ASNSP_2003_5_2_4_787_0,
     author = {Blank, Ivan and Shahgholian, Henrik},
     title = {Boundary regularity and compactness for overdetermined problems},
     journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze},
     pages = {787--802},
     publisher = {Scuola normale superiore},
     volume = {Ser. 5, 2},
     number = {4},
     year = {2003},
     mrnumber = {2040643},
     zbl = {1170.35484},
     language = {en},
     url = {http://www.numdam.org/item/ASNSP_2003_5_2_4_787_0/}
}