1. N Ichinose Talanta 18 21 (1971)
2. B K Rout and V Chakravarthy Acustica 81 190 (1995)
3. G M Ritcey and A W Ashbrook Solvent Extraction Principles and Applications to Process Metallurgy, p 453, Part II, (Amsterdam: Elsevier Scientific Publishing Company) (1979)
4. A Naylor and A Eccles Proc Int. Solv. Ext. Conf. (Moscow) 1 31 (1988)
5. A K De, S M Khopkar and R A Chalmers Solvent Extraction of Metals (London: Van Nostrand Reinhold Co) (1970)