1. D. R crow, “polarography of metal complexes” (academic press London, 1969), pp 37.
2. J. Koolman and K. Roehm, color Atlas of Biochemistry, (2nd edition, Thieme Verlag Rudigerstrasse 14, 70469 stuttgart, Germany 2005), pp 254.
3. C.H. Yogol, N.S. Sherchan, J. and K.C. Anupa, S. Mansoor, and P. Thapa, Kathmandu Univ., J. Sci., Engineering Tech. (Kathmandu Univ., 2010), 6(1), pp 102–107.
4. R.J.C. Rossotti and H.S. Rossotti, “The determination of stability constants,” (McGraw Hill, New York, 1961).
5. S.N Chandar and F Khan, Chemija (2008), 19(3-4), pp 1–6.