Cicek, Baki, et al. “Synthesis and Evaluation in Vitro Effects of Some Macrocyclic Thiacrown Ethers on Erythrocyte Carbonic Anhydrase I and II”. Asian Journal of Chemistry, vol. 24, no. 8, Apr. 2012, pp. 3729-31, https://asianpubs.org/index.php/ajchem/article/view/9434.