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Zeta and eta functions by Ashwani Kumar Thukral. Author Ashwani Kumar Thukral. Dr. A.K.Thukral, Professor at Guru Nanak Dev University, got his Ph.D. (1980) from BITS, Pilani, India. He has been on the faculty of Guru Nanak Dev University since 1980.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.