@article{DAN_1973_209_6_a8,
     author = {D. V. Pecherskii},
     title = {On rearrangements of terms in functional series},
     journal = {Doklady Akademii Nauk},
     pages = {1285--1287},
     year = {1973},
     volume = {209},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1973_209_6_a8/}
}