@article{TRSPY_1978_146_a0,
     author = {S. V. Bochkarev},
     title = {The method of averaging in the theory of orthogonal series and some questions in the theory of bases},
     journal = {Informatics and Automation},
     pages = {3--87},
     publisher = {mathdoc},
     volume = {146},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1978_146_a0/}
}