Ushijima, R.S., and Einstein, H.H. (1985). Application of a three-dimensional coupled finite element – boundary element method. In: Proceedings of the Symposium on Rock Masses: Modeling of Underground Openings, Probability of Slope Failure, Fracture of Intact Rock (C.H. Dowding, ed.), April 29-30, Denver, Colorado, pp. 21-37. ASCE library