no. 3
Geometry and function algebra on pseudo-flat manifolds
Annali della Scuola Normale Superiore di Pisa - Classe di Scienze, Série 3, Tome 26 (1972) no. 3, pp. 695-709. 
@article{ASNSP_1972_3_26_3_695_0,
     author = {Milani, A. and Rea, Claudio},
     title = {Geometry and function algebra on pseudo-flat manifolds},
     journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze},
     pages = {695--709},
     publisher = {Scuola normale superiore},
     volume = {Ser. 3, 26},
     number = {3},
     year = {1972},
     zbl = {0272.57014},
     mrnumber = {379902},
     language = {en},
     url = {archive.numdam.org/item/ASNSP_1972_3_26_3_695_0/}
}
Milani, A.; Rea, C. Geometry and function algebra on pseudo-flat manifolds. Annali della Scuola Normale Superiore di Pisa - Classe di Scienze, Série 3, Tome 26 (1972) no. 3, pp. 695-709. http://archive.numdam.org/item/ASNSP_1972_3_26_3_695_0/

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