@article{TRSPY_1991_200_a13,
     author = {M. I. Dyachenko},
     title = {Convex sets and multiple {Fourier} series},
     journal = {Informatics and Automation},
     pages = {147--156},
     publisher = {mathdoc},
     volume = {200},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1991_200_a13/}
}