TY  - JOUR
AU  - Yunmei Chen
TI  - The Weak Solutions to the Evolution Problems of Harmonic Maps.
JO  - Mathematische Zeitschrift
PY  - 1989
SP  - 69
EP  - 74
VL  - 201
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZ_1989__201_4_174035/
ID  - MZ_1989__201_4_174035
ER  -