@article{ASNSP_1976_4_3_4_665_0,
     author = {Nakai, Mitsuru and Sario, Leo},
     title = {Manifolds with strong harmonic boundaries but without {Green's} functions of clamped bodies},
     journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze},
     pages = {665--670},
     publisher = {Scuola normale superiore},
     volume = {Ser. 4, 3},
     number = {4},
     year = {1976},
     mrnumber = {419801},
     zbl = {0343.31012},
     language = {en},
     url = {http://archive.numdam.org/item/ASNSP_1976_4_3_4_665_0/}
}