1. B.C. Mukherjee S.C. Aush M.C. Sen T. Banerjee “recovery of zinc from Scraps and Wastes,” Symposium on Utilization of Mtallurgical Wastes, organized by national Metallurgical Laboratory Council & Industrial Research Jamshedpure-India, 1964
2. D.N. Fagg and N.B. Rutherford, B.N.F.M.R.A. Res. Sep. BRA 93A, Nov. 1951
3. M.A. Rabah A.S. Elsayed “Recovery of zinc and some of its valuable salts form secondary resources and wastes ” Hydrometallurgy, V 37 (1), 1995, 23-32
4. P. Koros, D. Hellickson and F. Dudek, Iron and Steel maker (I -and SM), V 23 n1, 1996, 21 -27
5. N.B. Ratherford, Sheet Metal Industries, Feb. 30 (310), 1953, 119-34