@article{GDZPPN002112663,
title = {Definitions of quasiconformality.},
journal = {Inventiones mathematicae},
volume = {121},
year = {1995},
pages = {61-80},
zbl = {0832.30013},
url = {http://dml.mathdoc.fr/item/GDZPPN002112663}
}
Heinonen, Juha; Koskela, Pekka. Definitions of quasiconformality.. Inventiones mathematicae, Tome 121 (1995) pp. 61-80. http://gdmltest.u-ga.fr/item/GDZPPN002112663/