TY  - JOUR
AU  - Robert Hardt
AU  - Fang Hua Lin
TI  - Harmonic maps into round cones and singularities of nematic liquid crystals.
JO  - Mathematische Zeitschrift
PY  - 1993
SP  - 575
EP  - 594
VL  - 213
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZ_1993__213_1_174547/
ID  - MZ_1993__213_1_174547
ER  -