1. Generalized Inverses: Theory and Applications;Ben-Israel,1974
2. Generalized Inverses of Linear Transformations;Campbell,1979
3. The commuting inverses of a square matrix;Englefield;Proc. Cambridge Philos. Soc,1966
4. Matrix Computations;Golub,1983
5. Note on the generalized inverse of matrix product;Greville;SIAM Rev,1966