@article{PIM_1969_N_S_09_23_a21,
     author = {Jovan D. Ke\v{c}ki\'c},
     title = {On {The} {Convergence} {Of} {Certain} {Sequences}},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {157 },
     year = {1969},
     volume = {_N_S_09},
     number = {23},
     url = {http://geodesic.mathdoc.fr/item/PIM_1969_N_S_09_23_a21/}
}