@article{1103920594,
author = {Dickey, L. A.},
title = {Integrable nonlinear equations and Liouville's theorem. I},
journal = {Comm. Math. Phys.},
volume = {79},
number = {1},
year = {1981},
pages = { 345-360},
language = {en},
url = {http://dml.mathdoc.fr/item/1103920594}
}
Dickey, L. A. Integrable nonlinear equations and Liouville's theorem. I. Comm. Math. Phys., Tome 79 (1981) no. 1, pp. 345-360. http://gdmltest.u-ga.fr/item/1103920594/