Ubale, Sanjay, et al. “Ultrasonic Velocity, Viscosity and Density of Chloro Substituted 2-Hydroxy Acetophenones in Ethanolic Solution at 303.15 K”. Asian Journal of Chemistry, vol. 13, no. 4, Mar. 2010, pp. 1685-8, https://asianpubs.org/index.php/ajchem/article/view/22871.