@article{IVM_1974_1_a13,
     author = {Ya. T. Sultanaev},
     title = {A two-sided {Tauberian} theorem for ratios},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {103--112},
     publisher = {mathdoc},
     number = {1},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1974_1_a13/}
}