On global controllability of affine nonlinear systems with a triangular-like structure. - YiMin Sun; ShengWei Mei; Qiang Lu (Sci. China Ser. F Inf. Sci., 2007)

Necessary and Sufficient Condition for Global Controllability of a Class of Affine Nonlinear Systems. - YiMin Sun; ShengWei Mei; Qiang Lu (J. Syst. Sci. Complex., 2007)

On global controllability of planar affine nonlinear systems with a singularity. - YiMin Sun; ShengWei Mei; Qiang Lu (Syst. Control. Lett., 2009)