@article{ELA_2002__9__a11,
     author = {Castro Gonz\'alez, N. and Koliha, J.J. and Wei, Yimin},
     title = {Integral representation of the {Drazin} inverse},
     journal = {The electronic journal of linear algebra},
     pages = {129--131},
     publisher = {mathdoc},
     volume = {9},
     year = {2002},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ELA_2002__9__a11/}
}