TY  - JOUR
AU  - Hengartner, Walter
AU  - Szynal, Jan
TI  - Univalent Harmonic Ring Mappings Vanishing on the Interior Boundary
JO  - Canadian journal of mathematics
PY  - 1992
SP  - 308
EP  - 323
VL  - 44
IS  - 2
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1992-021-x/
DO  - 10.4153/CJM-1992-021-x
ID  - 10_4153_CJM_1992_021_x
ER  -