1. G.L. Miller, Zirconium, Industrial Chemistry, 26 (1950).
2. J. Song, et al, A two-step zircon decomposition method to produce zirconium oxychloride: alkali fusion and water leaching, Rare Metals, 1-7 (2015).
3. S. Naher, A.S.M.A. Haseeb, A technical note on the production of zirconia and zircon brick from locally available zircon in Bangladesh, Journal of materials processing technology, 172(3), 388-393 (2006).
4. R.K. Biswas, et al, A novel method for processing of Bangladeshi zircon: Part I: Baking, and fusion with NaOH. Hydrometallurgy, 103(1), 124-129 (2010).
5. S. Lubbe, R. Munsami, D. Fourie, Beneficiation of zircon sand in South Africa, Journal of the Southern African Institute of Mining and Metallurgy, 112, 583-588 (2012).
6. A.M. Abdelkader, A. Daher, E. El-Kashef, Novel Decomposition Method for Zircon, Journal of Alloys and Compounds, 460, 577-80 (2008).
7. K.A. El Barawy, S.Z. El Tawil, A.A. Francis, Alkali fusion of zircon sand, Mineral Processing and Extractive Metallurgy, 109(1), 49-56 (2000) 49-56.
8. R.K. Biswas, M.A. Habib, M.R. Islam, A novel method for processing of Bangladeshi zircon: Part II: Leaching of zircon-caustic fused mass by hydrochloric acid, Hydrometallurgy, 103(1), 130-135 (2010).
9. R.J.F. da Silva, A.J.B. Dutra, J.C. Afonso, Alkali fusion followed by a two-step leaching of a Brazilian zircon concentrate, Hydrometallurgy, 117, 93-100 (2012).
10. R. Ranjit, A Primer on the Taguchi Method, Van Nostrand Reinhold, (1990).
11. Y.M. Chiang, H. Hsieh, The Use of the Taguchi Method with Grey Relational Analysis to Optimize the Thin-Film Sputtering Process with Multiple Quality Characteristic in Color Filter Manufacturing, Computers & Industrial Engineering, 56, 648-61 (2009).
12. S. Datta, S.S. Mahapatra, Use of Desirability Function and Principal Component Analysis in Grey-Taguchi Approach to Solve Correlated Multi-Response Optimization in Submerged Arc Welding, Journal of Advanced Manufacturing Systems, 9, 117-128 (2010).
13. C. Lin, Use of the Taguchi Method and Grey Relational Analysis to Optimize Turning Operations with Multiple Performance Characteristics, Materials and manufacturing processes, 19, 209-220 (2004).
14. J.L Deng, Introduction to Grey System Theory, The Journal of grey system, 1, 1-24 (1989).
15. Y. Kuo, T. Yang, G.W Huang, The Use of Grey Relational Analysis in Solving Multiple Attribute Decision-Making Problems, Computers & Industrial Engineering, 55, 80-93 (2008).
16. J.L Deng, Control Problems of Grey Systems, Systems & Control Letters, 1, 288-294 (1982).
17. J.T Huang, Y.S Liao, Optimization of Machining Parameters of Wire-Edm Based on Grey Relational and Statistical Analyses, International Journal of Production Research, 41, 1707-1720 (2003).
18. R. Liu, et al, Analysis of water leaching and transition processes in zirconium oxychloride octahydrate production, Ceramics International, 40(1), 1431-1438 (2014).
19. J.C. Clayton, Ch.J. Sindlinger, Method of Recovering Zirconium Values from Zircon, United States patent US, 2, 962, 347 (1960).