@article{ELA_2009__18__a13,
     author = {Cao, Chongguang and Li, Juyan},
     title = {Group inverses for matrices over a {B\'ezout} domain},
     journal = {The electronic journal of linear algebra},
     pages = {600--612},
     publisher = {mathdoc},
     volume = {18},
     year = {2009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ELA_2009__18__a13/}
}