1．Shugang Li, Gengsheng Wang, The Time Optimal Control of the Boussinesq Equations, Numerical Functional Analysis and Optimization, Vol. 24, Nos. 1&2, pp163-180, 2003.2．Shugang Li, Gengsheng Wang, Stabilization of the Phase-field System via Internal Feedback Control, Communications on Applied Nonlinear Analysis, Vol. 11, No. 2, pp33-43, 2004. 3．Shugang Li, Optimal Control of Boussinesq Equations with State Constraints, Nonlinear Analysis, Theory,Method and Applications,Vol. 60, No. 8, pp1485-1508, 2005.
