Homotopy classification of maps between simply connected four manifolds. - Xuan Zhao 003; Hongzhu Gao; Xiaole Su (J. Symb. Comput., 2005)

Irreducible Decompositions of Degeneracy Loci of Matrices. - Xuan Zhao 003; Hongzhu Gao (Int. J. Algebra Comput., 2008)