لادریان، اصغر، ۱۳۷۸- اصول مکانیک سنگ ، چاپ اول اردیبهشت ۱۳۷۸
s under Polyaxial Loading Conditions, Dissertation, U.K.
Brown, E.T., 1989- International Society for Rock Mechanics Commission on Standardization of Laboratory and Field Tests, Suggested
Methods, Oxford, Pergamon.
Goodman, R.E., 1989- Introduction to Rock Mechanics, Second Edition, John Wiley & Sons.