A treatise on trigonometric series : N. K. Bary ; translated by Margaret F. Mullins. vol. 2 / Bari, N. K. Fourier series. QA404 .B343 1964 514 BAT Bibliography: p. 489-500. Oxford : Pergamon Press, 1964. 1964. 1964 Text xix, 508 p ; eng engrus