@article{PIM_1978_N_S_24_38_a11,
     author = {Jovan D. Ke\v{c}ki\'c},
     title = {On {Some} {Classes} {Of} {Linear} {Equations}},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {89 },
     publisher = {mathdoc},
     volume = {_N_S_24},
     number = {38},
     year = {1978},
     url = {http://geodesic.mathdoc.fr/item/PIM_1978_N_S_24_38_a11/}
}