Ozer Ilhan, Ilhan, et al. “Reactions of Some Pyrazole-3-Carboxylic Acid and Carboxylic Acid Chlorides With Various Alcohols”. Asian Journal of Chemistry, vol. 24, no. 1, Sept. 2011, pp. 141-4, https://asianpubs.org/index.php/ajchem/article/view/15951.