1. Teofers, R., Friden, C., Georgsson, L., A study of the applicability of the Palmgren-Miner partial damage hypothesis, Magazine of Concrete Research, vol. 29, no 100, Sept. 1977, pp. 123–130.
2. Bergues, J., Terrien, M., Study of concrete’s cracking under multiaxial stresses, Advances in Fracture Research, 5th Int. Conf. on Fracture, Cannes, France, 29 March–3 April 1981.
3. Tepfers, R., Hedberg, B., Szczekocki, G., Absorption of energy in fatigue loading of plain concrete, Matériaux & Construction, vol. 17, no 97, pp. 59–64, Bordas-Dunod, 1984.
4. Hardy, R.H.Tr. and Langer, M., The mechanical behaviour of salt, Proc. 1st Conf. Pensylviana Trans. Tech. Pub. 1981.
5. Stokes, R.J., Fracture of Ceramics, Proc. 4th Symp. on Fundamental Phenomena in the Materials Sciences, Boston Mas. USA. Jan. 31-Feb. 1. 151–175, 1966.