1. Theory of Elasticity;Timoshenko,1951
2. Working under the sea;National Coal Board;NCB Mining Dept Instruction, PI/1968/8,1971
3. Subsidence Engineers Handbook;National Coal Board,1975
4. Results of research to develop guidelines for mining near surface and underground bodies of water;Babcock,1977
5. Undersea coal mining in Australia;Liu;J. Mine Survey, China,1982