Xb. Hu et R. Bullough, A BACKLUND TRANSFORMATION AND NONLINEAR SUPERPOSITION FORMULA OF THE CAUDREY-DODD-GIBBON-KOTERA-SAWADA HIERARCHY, Journal of the Physical Society of Japan, 67(3), 1998, pp. 772-777
In this paper, the Caudrey-Dodd-Gibbon-Kotera-Sawada hierarchy in bili
near form is considered. A Backlund transformation for the CDGKS hiera
rchy is presented. Under certain conditions, the corresponding nonline
ar superposition formula is proved.