@article{03925648,
title = {Finite propagation speed and kernels of strictly elliptic operators.},
journal = {International Journal of Mathematics and Mathematical Sciences},
volume = {8},
year = {1985},
pages = {75-91},
doi = {10.1155/S0161171285000072},
zbl = {0578.47039},
language = {en},
url = {http://dml.mathdoc.fr/item/03925648}
}
Gurarie, David. Finite propagation speed and kernels of strictly elliptic operators.. International Journal of Mathematics and Mathematical Sciences, Tome 8 (1985) pp. 75-91. doi : 10.1155/S0161171285000072. http://gdmltest.u-ga.fr/item/03925648/