Integrable anisotropic evolution equations on a sphere. Meshkov, Anatoly G.; Balakhnev, Maxim Ju. — 2005 SIGMA. Symmetry, Integrability and Geometry: Methods and Applications [electronic only]
Two-field integrable evolutionary systems of the third order and their differential substitutions. Meshkov, Anatoly G.; Balakhnev, Maxim Ju. — 2008 SIGMA. Symmetry, Integrability and Geometry: Methods and Applications [electronic only]