@article{GDZPPN002110806,
title = {Counterexamples to H\"olmgren's uniqueness for analytic non linear Cauchy problem.},
journal = {Inventiones mathematicae},
volume = {114},
year = {1993},
pages = {217-222},
zbl = {0794.35026},
url = {http://dml.mathdoc.fr/item/GDZPPN002110806}
}
Métivier, G. Counterexamples to Hölmgren's uniqueness for analytic non linear Cauchy problem.. Inventiones mathematicae, Tome 114 (1993) pp. 217-222. http://gdmltest.u-ga.fr/item/GDZPPN002110806/