TY  - JOUR
AU  - Nicolas, Jean-Philippe
TI  - On Lars Hörmander's remark on the characteristic Cauchy problem
JO  - Comptes Rendus. Mathématique
PY  - 2007
SP  - 621
EP  - 626
VL  - 344
IS  - 10
PB  - Elsevier
UR  - http://www.numdam.org/articles/10.1016/j.crma.2007.03.010/
DO  - 10.1016/j.crma.2007.03.010
LA  - en
ID  - CRMATH_2007__344_10_621_0
ER  -