1. A. N. Podkorytov, “Summation of multiple Fourier series over polyhedrons,” Vestn. Leningrad. Univ., No. 1, 51–58 (1980).
2. V. G. Sprindzhuk, Metric Theory of Diophantine Approximations [in Russian], Nauka, Moscow (1977).
3. O. I. Kuznetsova, “On strong Carleman means of multiple trigonometric series,” Ukr. Mat. Zh., 44, No. 2, 275–279 (1992).
4. O. I. Kuznetsova, “On partial sums over polyhedrons of Fourier series of bounded functions, Anal. Math., 19, 267–272 (1993).
5. A. N. Podkorytov, “Order of growth of Lebesgue constants of Fourier sums over polyhedrons, Vestn. Leningrad. Univ., No. 7, 110–111 (1982).