Konovalov, S. P. Absolute convergence of multiple Fourier series. (English) Zbl 0416.42010 Math. Notes 25, 109-112 (1979). MSC: 42B05 × Cite Format Result Cite Review PDF Full Text: DOI
Konovalov, S. P. Über die absolute Konvergenz mehrfacher Fourierreihen. (Russian) Zbl 0398.42014 Mat. Zametki 25, 211-216 (1979). MSC: 42B05 × Cite Format Result Cite Review PDF