Havrylyuk, Dmytro, et al. “Synthesis of New 4-Azolidinones With 3,5-Diaryl-4,5-Dihydropyrazole Moiety and Evaluation of Their Antitumor Activity in Vitro”. Current Issues in Pharmacy and Medical Sciences, vol. 23, no. 3, Sept. 2010, pp. 173-7, https://czasopisma.umlub.pl/curipms/article/view/2916.