@article{MZM_1967_1_3_a4,
     author = {I. I. Volkov},
     title = {Compatability of two summation methods},
     journal = {Matemati\v{c}eskie zametki},
     pages = {283--290},
     year = {1967},
     volume = {1},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1967_1_3_a4/}
}