O. I. Kalchenko, S. O. Cherenok, V. I. Kalchenko, A. V. Solovyov, and V. V. Gorbatchuk, “The study of complexation of 5,17-bis-(n-tolyliminomethyl)- 25,27-dipropoxycalix[4]arene with benzoic acids by rp hplc and molecular modeling methods”, J. Org. Pharm. Chem., vol. 11, no. 3(43), pp. 3–8, Sep. 2013.