%0 Journal Article %T A polarographic study of tl+,pb2+and cd2+ complexes with aza-18-crown-6 and dibenzopyridino-18-crown %A Ronaghi, Gholam Hossein %A Sarafraz Yazdi, Ali %A Monsef Khoshhesab, Zahra %J Journal of Inclusion Phenomena and Macrocyclic Chemistry %@ 1388-3127 %D 2002