@article{ASNSP_1987_4_14_4_569_0,
     author = {Bardi, Martino},
     title = {An asymptotic formula for the {Green's} function of an elliptic operator},
     journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze},
     pages = {569--586},
     publisher = {Scuola normale superiore},
     volume = {Ser. 4, 14},
     number = {4},
     year = {1987},
     mrnumber = {963490},
     zbl = {0672.35016},
     language = {en},
     url = {http://archive.numdam.org/item/ASNSP_1987_4_14_4_569_0/}
}