no. 4
Manifolds with strong harmonic boundaries but without Green's functions of clamped bodies
Annali della Scuola Normale Superiore di Pisa - Classe di Scienze, Série 4, Tome 3 (1976) no. 4, pp. 665-670. 
@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},
     zbl = {0343.31012},
     mrnumber = {419801},
     language = {en},
     url = {archive.numdam.org/item/ASNSP_1976_4_3_4_665_0/}
}
Nakai, Mitsuru; Sario, Leo. Manifolds with strong harmonic boundaries but without Green's functions of clamped bodies. Annali della Scuola Normale Superiore di Pisa - Classe di Scienze, Série 4, Tome 3 (1976) no. 4, pp. 665-670. http://archive.numdam.org/item/ASNSP_1976_4_3_4_665_0/

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