1. I. D. Reznik, G. P. Ermakov, and Ya. M. Shneerson, Nickel (Nauka Tekhnol., Moscow, 2001), Vol. 2.
2. A. D. Dalvi, W. G. Bacon, and R. C. Osborne, “The past and the future of nickel laterites,” in PDAC 2004 International Convention (Trade Show & Investors Exchange, Ontario, 2004).
3. Nickel Recovery from Reject Laterite by Graeme Goodall (McGill University, Montreal, 2007).
4. Nickel laterite deposits—geological overview, resources and exploration;M. Ellias,2002
5. Nickel laterites in SE Asia;M. Ellias,2013