no. 1
Schauder estimates for a class of degenerate elliptic and parabolic operators with unbounded coefficients in ℝ n
Annali della Scuola Normale Superiore di Pisa - Classe di Scienze, Série 4, Tome 24 (1997) no. 1, pp. 133-164. 
@article{ASNSP_1997_4_24_1_133_0,
     author = {Lunardi, Alessandra},
     title = {Schauder estimates for a class of degenerate elliptic and parabolic operators with unbounded coefficients in $\mathbb {R}^n$},
     journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze},
     pages = {133--164},
     publisher = {Scuola normale superiore},
     volume = {Ser. 4, 24},
     number = {1},
     year = {1997},
     zbl = {0887.35062},
     mrnumber = {1475774},
     language = {en},
     url = {archive.numdam.org/item/ASNSP_1997_4_24_1_133_0/}
}
Lunardi, Alessandra. Schauder estimates for a class of degenerate elliptic and parabolic operators with unbounded coefficients in $\mathbb {R}^n$. Annali della Scuola Normale Superiore di Pisa - Classe di Scienze, Série 4, Tome 24 (1997) no. 1, pp. 133-164. http://archive.numdam.org/item/ASNSP_1997_4_24_1_133_0/

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