Global well-posedness of the initial value problem for the Hirota-Satsuma system. Xueshang Feng — 1994 Manuscripta mathematica
Well-posed solutions of the third order Benjamin-Ono equation in weighted Sobolev spaces. Feng, Xueshang — 1997 Bulletin of the Belgian Mathematical Society - Simon Stevin
On a generalized nonlinear equation of Schrödinger type. Feng, Xueshang — 1995 Bulletin of the Belgian Mathematical Society - Simon Stevin