Nour, E.-M. et al. 2016. Spectroscopic Studies on the Reaction of Iodine with the Mixed Oxygen-nitrogen Cyclic Base 4,7,13,16,21,24-Hexaoxa-1,10-diazabicyclo[8,8,8]hexacosane. Asian Journal of Chemistry. 17, 2 (Jan. 2016), 985–990.