1. Generalized Inverses: Theory and Applications;Ben-Israel,2003
2. Generalized Inverse of Linear Transformations;Campbell,1979
3. A Drazin inverse for rectangular matrices;Cline;Linear Algebra Appl.,1980
4. Rank factorization and Moore–Penrose inversion;Hartwig;J. Ind. Math. Soc.,1976
5. Representations for the Drazin inverse of 2×2 block matrix;Hartwig;SIAM J. Matrix Anal. Appl.,2006