@article{PIM_1985_N_S_38_52_a7,
     author = {Jovan D. Ke\v{c}ki\'c},
     title = {Commutative {Weak} {Generalized} {Inverses} of a {Square} {Matrix} and some {Related} {Matrix} {Equations}},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {39 },
     publisher = {mathdoc},
     volume = {_N_S_38},
     number = {52},
     year = {1985},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PIM_1985_N_S_38_52_a7/}
}