@article{IVM_2007_2_a2,
     author = {E. Yu. Leonchik and N. A. Malaksiano},
     title = {Precise summability indices for functions from classes $A_\infty$},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {17--26},
     publisher = {mathdoc},
     number = {2},
     year = {2007},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2007_2_a2/}
}