1. Evaluation of subsidence parameters for inclined seams in U.K. coalfields;Yao,1991
2. Subsidence Engineers' Handbook;National Coal Board,1966-1975
3. A study of surface subsidence behaviour arising from longwall mining of steeply pitching coal seams;Degirmenci,1988
4. Modelling of mining subsidence mechanisms and prediction of ground movements;Fitzpatrick,1987