1. R. S. Thakur and S. N. Das: ‘Recovery of metal values’, in ‘Red mud — analysis and utilisation’, (ed. S. Sivakamasundari), 158-185; 1994, New Delhi, Wiley Eastern Limited.
2. R. S. Thakur and S. N. Das: ‘Recovery of alkali’, in ‘Red mud — analysis and utilisation’, (ed. S. Sivakamasundari), 186-194; 1994, New Delhi, Wiley Eastern Limited.
3. O. C. Fursman, J. E. Mauser, M. O. Butler and W. A. Stickney: ‘Utilization of red mud residues from alumina production’, Report of Investigations 7454, United States Department of the Interior, Bureau of Mines, Washington, DC, USA, 1970.