@article{TRSPY_1977_143_a8,
     author = {L. P. Postnikova and A. A. Yudin},
     title = {An analytic method for estimates of the concentration function},
     journal = {Informatics and Automation},
     pages = {143--151},
     publisher = {mathdoc},
     volume = {143},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1977_143_a8/}
}