@article{ASNSP_1987_4_14_2_229_0,
author = {Alessandrini, Giovanni},
title = {Critical points of solutions of elliptic equations in two variables},
journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze},
pages = {229--256},
publisher = {Scuola normale superiore},
volume = {Ser. 4, 14},
number = {2},
year = {1987},
zbl = {0649.35026},
mrnumber = {939628},
language = {en},
url = {http://www.numdam.org/item/ASNSP_1987_4_14_2_229_0/}
}
Alessandrini, Giovanni. Critical points of solutions of elliptic equations in two variables. Annali della Scuola Normale Superiore di Pisa - Classe di Scienze, Série 4, Tome 14 (1987) no. 2, pp. 229-256. http://www.numdam.org/item/ASNSP_1987_4_14_2_229_0/
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