K. S. Koppiker

Separation of neodymium from lighter rare earths using alkyl phosphonic acid, PC 88A

N. Iyer, N. Thakur, D. V. Jayawant, 1993 .

Extraction-spectrophotometric determination of copper with LIX-64N

N. Maity, K. S. Koppiker, 1975 .