@article{CHFMJ_2017_2_2_a4,
     author = {A. Yu. Popov},
     title = {The upper bound of the remainder of power series with positive coefficients of a special class},
     journal = {\v{C}el\^abinskij fiziko-matemati\v{c}eskij \v{z}urnal},
     pages = {193--198},
     publisher = {mathdoc},
     volume = {2},
     number = {2},
     year = {2017},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/CHFMJ_2017_2_2_a4/}
}