Patil, T.J., and H.A. Patil. “Ultrasonic and Viscometric Studies of the Behaviour of Cetyltrimethyl Ammonium Bromide in Aqueous Polyacrylamide at Different Temperatures”. Asian Journal of Chemistry, vol. 17, no. 3, May 2016, pp. 1979-83, https://asianpubs.org/index.php/ajchem/article/view/14065.