1. Wechsler, M. S.: in “Defects in Refractory Metals”, CEN/SCK, Mol, Belgium, 1972, p. 235.
2. “Defects and Defect Clusters in b.c.c. Metals and Their Alloys”;Wechsler;Nuclear Metallurgy,1973
3. Radiation-anneal hardening in niobium — an effect of post-irradiation annealing on the yield stress
4. Bloom, E. E.: in “Radiation Damage in Metals” (eds. Peterson, N. L., Harkness, S. D.), Am. Soc. Metals Park, U.S.A., 1976, p. 28.