1. Tauberian Constants for a Family of Transformations
2. A. Zygmund, Trigonometric Series, 2nd rev. ed., Vol. 1, (Cambridge University Press, 1959).
3. B.Kuttner, Indian, Math. Soc., 44, pp. 23–38(1980).
4. B. N. Sahney, and D. S. Goel, Ranchi University Math. Jour., 4, pp. 50 – 53(1973).
5. E. C. Titchmarsh, The theory of function, (Oxford University Press, 1939), pp. 402–403.