@article{ELA_2011__22__a32,
     author = {Xiong, Zhiping and Qin, Yingying},
     title = {Invariance properties of an operator product involving generalized inverses},
     journal = {The electronic journal of linear algebra},
     pages = {694--703},
     publisher = {mathdoc},
     volume = {22},
     year = {2011},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ELA_2011__22__a32/}
}