1. Krenchel, H., Fibre reinforcement, (Diss. Technical University of Denmark). Akademisk Forlag, Copenhagen, 1964, pp. 159.
2. Krenchel, H., Fibre spacing and specific fibre surface. RILEM Symposium: Fibre Reinforced Cement and Concrete, London 1975. The Construction Press, Horneby, Lancaster, 1976, pp. 69–79 and pp. 511–513.
3. Garvie, R.S., Hannik, R.H.J. and Pasco, R.T., Ceramic steel, Nature (London), 1975, 258, pp. 703–705.
4. Advanced Ceramic Materials, Jan. 1986, Vol. 1, No. 1, News: Superplasticity of high-performance ceramics, p. 7.
5. Lambropoulos, J.C., Effect of nucleation on transformation toughening. American Ceramic Society, ACS. Journ., Vol. 69, No. 3, March 1986, pp. 218–222.