1. Sh. A. Alimov, V. A. Il'in, and E. M. Nikishin, “Problems of convergence of multiple trigonometric series and spectral decompositions,” Usp. Mat. Nauk, 31, No. 6, 28–83 (1976).
2. M. Bachbuch and E. M. Nikishin, “On the convergence of double Fourier series of continuous functions,” Sib. Mat. Zh., 14, No. 6, 1189–1199 (1973).
3. I. L. Bloshanskii, “On the equiconvergence of multiple trigonometric Fourier series and Fourier integrals,” Mat. Zametki, 18, No. 2, 153–168 (1975).
4. I. L. Bloshanskii, On the convergence and localization of multiple Fourier series and multiple Fourier integrals [in Russian], Ph.D. Thesis, MSU, Moscow (1978).
5. I. L. Bloshanskii, “A generalized localization almost everywhere and the convergence of double Fourier series,” Dokl. Akad. Nauk SSSR, 242, No. 1, 11–13 (1978).