- Xifu Liu; Hu Yang
*A note on the reverse order laws for {1, 2, 3}- and {1, 2, 4}-inverses of multiple matrix products,*

Electron. J. Linear Algebra 22 (2011), 620-629. - Zhiping Xiong; Bing Zheng
*The reverse order laws and the mixed-type reverse order laws for generalized inverses of multiple matrix products,*

Electron. J. Linear Algebra 22 (2011), 1085-1105.