1. F. G. Arutyunyan, ?Reconstruction of the coefficients of series with respect to the Haar and Walsh systems convergent to Denjoy-integrable functions,? Izv. Akad. Nauk SSSR, Ser. Matem.,30, No. 2, 325?344 (1966).
2. F. G. Arutyunyan and A. A. Talalyan, ?Uniqueness of series on the Haar and Walsh systems,? Izv. Akad. Nauk SSSR, Ser. Matem.,28, No. 6, 1391?1408 (1964).
3. N. K. Bari [Bary], A Treatise on Trigonometric Series, Pergamon, New York (1964).
4. I. L. Bondi, ?On functions A-integrable almost everywhere,? Dokl. Akad. Nauk SSSR,145, No. 3, 491?494 (1962).
5. I. L. Bondi, ?Change of variable in the A-integral,? Uchz. Zap. Moskov. Gos. Pedagog. Inst., No. 188, 3?21 (1962).