TY  - JOUR
AU  - V. A. Klyachin
TI  - Zero mean curvature surfaces of mixed type in Minkowski space
JO  - Izvestiya. Mathematics 
PY  - 2003
SP  - 209
EP  - 224
VL  - 67
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM2_2003_67_2_a1/
LA  - en
ID  - IM2_2003_67_2_a1
ER  -