@article{ASNSP_2001_4_30_3-4_713_0,
     author = {Chen, Chiun-Chuan and Lin, Chang-Shou},
     title = {A spherical {Harnack} inequality for singular solutions of nonlinear elliptic equations},
     journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze},
     pages = {713--738},
     publisher = {Scuola normale superiore},
     volume = {Ser. 4, 30},
     number = {3-4},
     year = {2001},
     mrnumber = {1896083},
     zbl = {1072.35071},
     language = {en},
     url = {http://www.numdam.org/item/ASNSP_2001_4_30_3-4_713_0/}
}