@article{TM_2013_280_a9,
     author = {L. Gogoladze and V. Tsagareishvili},
     title = {Some classes of functions and {Fourier} coefficients with respect to general orthonormal systems},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {162--174},
     publisher = {mathdoc},
     volume = {280},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_2013_280_a9/}
}