@article{05038641, title = {Integrable anisotropic evolution equations on a sphere.}, journal = {SIGMA. Symmetry, Integrability and Geometry: Methods and Applications [electronic only]}, volume = {1}, year = {2005}, zbl = {1099.35139}, language = {en}, url = {http://dml.mathdoc.fr/item/05038641} }
Meshkov, Anatoly G.; Balakhnev, Maxim Ju. Integrable anisotropic evolution equations on a sphere.. SIGMA. Symmetry, Integrability and Geometry: Methods and Applications [electronic only], Tome 1 (2005) . http://gdmltest.u-ga.fr/item/05038641/