@article{00902757,
title = {On quasiconformal reflection. (Zur quasikonformen Spiegelung.)},
journal = {Annales Academiae Scientiarum Fennicae. Mathematica},
volume = {21},
year = {1996},
pages = {101-109},
zbl = {0857.30022},
language = {en},
url = {http://dml.mathdoc.fr/item/00902757}
}
Kühnau, Reiner. On quasiconformal reflection. (Zur quasikonformen Spiegelung.). Annales Academiae Scientiarum Fennicae. Mathematica, Tome 21 (1996) pp. 101-109. http://gdmltest.u-ga.fr/item/00902757/