TY  - JOUR
AU  - V. Khatskevich
TI  - Generalized fractional linear transformations: convexity and compactness of the image and the pre-image; applications.
JO  - Studia Mathematica
PY  - 1999
SP  - 169
EP  - 175
VL  - 137
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/sm-137-2-169-175/
DO  - 10.4064/sm-137-2-169-175
LA  - en
ID  - 10_4064_sm_137_2_169_175
ER  -