TY  - JOUR
AU  - Matti Vuorinen
TI  - Quadruples and spatial quasiconformal mappings.
JO  - Mathematische Zeitschrift
PY  - 1990
SP  - 617
EP  - 628
VL  - 205
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZ_1990__205_3_174199/
ID  - MZ_1990__205_3_174199
ER  -