Rounaghi, C Study of the complex formation between 18C6 crown ether and Tl(+), Pb(2+) and Cd(2+) in binary non-aqueous solvents using differential pulse polarography. [electronic resource] - Talanta Jul 1996 - 1043-8 p. digital Publication Type: Journal Article ISSN: 0039-9140 Standard No.: 10.1016/0039-9140(96)01857-7 doi