@article{ASNSP_2009_5_8_3_451_0,
     author = {Alessandrini, Giovanni and Nesi, Vincenzo},
     title = {Invertible harmonic mappings, beyond {Kneser}},
     journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze},
     pages = {451--468},
     publisher = {Scuola Normale Superiore, Pisa},
     volume = {Ser. 5, 8},
     number = {3},
     year = {2009},
     mrnumber = {2574339},
     zbl = {1182.31002},
     language = {en},
     url = {http://archive.numdam.org/item/ASNSP_2009_5_8_3_451_0/}
}