Krawiecka, Mariola, et al. “Synthesis and Preliminary Evaluation of Antimicrobial Activity of Selected Derivatives of 2-Benzofurancarboxylic Acid”. Current Issues in Pharmacy and Medical Sciences, vol. 23, no. 4, Dec. 2010, pp. 11-18, https://czasopisma.umlub.pl/curipms/article/view/2939.