Optimal Error Estimates of the Legendre Tau Method for Second-Order Differential Equations. - Ting-Ting Shen; Zhongqiang Zhang; He-Ping Ma (J. Sci. Comput., 2010)

A Legendre Petrov-Galerkin method for fourth-order differential equations. - Ting-Ting Shen; Kang-Zheng Xing; He-Ping Ma (Comput. Math. Appl., 2011)