Boosaeeidi, F.; Rounaghi, G.; Kazemi, M. A Conductometric Study of Complexation Reactions Between 4-Nitrobenzo-15-Crown-5 With Ag+, Hg2+, Tl+ and La3+ Metal Ions in Acetonitrile-Methanol Binary Solutions. ajc 2010, 20, 5643-5650.