@article{bwmeta1.element.desklight-9bd64003-4713-4701-9533-e3d12ded0f8e,
author = {L. R. Hunt and J. J. Murray and M. J. Strauss},
title = {Liouville's theorem for first-order partial differential operators},
journal = {Colloquium Mathematicae},
volume = {42},
year = {1979},
pages = {117-121},
zbl = {0424.35067},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.desklight-9bd64003-4713-4701-9533-e3d12ded0f8e}
}
L. R. Hunt; J. J. Murray; M. J. Strauss. Liouville's theorem for first-order partial differential operators. Colloquium Mathematicae, Tome 42 (1979) pp. 117-121. http://gdmltest.u-ga.fr/item/bwmeta1.element.desklight-9bd64003-4713-4701-9533-e3d12ded0f8e/