1. Calcium Phosphates in Biological and Industrial Systems;Seckler,1998
2. The effect of the physical structure of a porous Ca-based sorbent on its phosphorus removal capacity
3. J.H. Johnston, A.J. McFarlane, T. Borrmann, in: Appita Annual Conference Proceedings, 56th, 2002, pp. 453–457
4. Towards the efficient utilization of geothermal resources
5. R.T. Harper, J.H. Johnston, N. Wiseman, Tasman Pulp & Paper Co., Limited, NZ; Geochemistry Research Limited, US, p. 57, Cont.-in-part of US 5,200,165