Citation: Rb. Gupta et al., TERNARY COMPLEXES OF SOME LANTHANIDE IONS WITH CIS-1,2,3,4-CYCLOPENTANE TETRACARBOXYLIC ACID (CPTA) AS A PRIMARY LIGAND AND PYRIDINE-3-CARBOXYLIC ACID AS A SECONDARY LIGAND, National Academy Science Letters, 18(11-12), 1995, pp. 211-216