1. Whittaker, B. N. and Singh, R. N., “Design aspects of barrier pillars against water logged workings in coal mining operations”, Symposium on Water in Mining and Underground Works, SIAMOS 1978, Granada, Spain, Vol. 1, pp. 675–692.
2. Whittaker, B. N. Singh, R. N. and Neate, C. J., “Effect of longwall mining on ground permeability and sub-surface drainage”, 1st International Mine Water Drainage Symposium, Denver, May 1979.
3. Neate, C. J. and Whittaker, B. N., “Influence of proximity of longwall mining on strata permeability and groundwater”, 20th U.S. Symposium on Rock Mechanics, Austin, Texas, June 1979.
4. Neate, C. J., “Effects of mining subsidence on the permeability of coal measures rocks”, Ph.D. Thesis, University of Nottingham, October 1980.
5. McPherson, M. J., “The occurrence of methane in mine workings”, Jl. Mine Vent Soc of SA, Vol. 28, No. 8, August 1975.