TY  - JOUR
AU  - Piotr Rybka
TI  - Propagation of weak singularities on characteristic surfaces of non-constant multiplicity
JO  - Annales Polonici Mathematici
PY  - 1988
SP  - 81
EP  - 92
VL  - 49
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/ap-49-1-81-92/
DO  - 10.4064/ap-49-1-81-92
LA  - en
ID  - 10_4064_ap_49_1_81_92
ER  -