Mahendra Misra, B. P. Padhy, Dattaram Bisoyi and U. K. Misra 2013. On degree of approximation of conjugate series of a Fourier series by product summability. Malaya Journal of Matematik. 1, 02 (Apr. 2013), 37–42. DOI:https://doi.org/10.26637/mjm102/005.