B. M Yamin, H. M Abosadiya, S. Aisah Hasbullah, and J. Jumina, “Structural, Antioxidant and Antivarial Studies of C-3-nitrophenyl CALIX[4]resorcinarene”, Int. J. Adv. Sci. Eng. Inf. Technol., vol. 4, no. 3, pp. 125–128, Jun. 2014.