@article{PIM_1964_N_S_04_18_a18,
     author = {Bogoljub Stankovi\'c},
     title = {La {Convergence} {Des} {S\'eries} {D'Op\'erateurs}},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {141 },
     publisher = {mathdoc},
     volume = {_N_S_04},
     number = {18},
     year = {1964},
     url = {http://geodesic.mathdoc.fr/item/PIM_1964_N_S_04_18_a18/}
}