1. K. Smithells, Tungsten [Russian translation], Metallurgizdat 237 (1958).
2. M. I. Gavrilyuk, I. N. Chaporova, and P. P. Vasil'eva, Fiz. Metal. i Metalloved.,13, 5 (1962).
3. E. Nakhtagal, Collection: Heat-and Corrosion-Resisting Materials [inRussian] Oborongiz, 319 (1959).
4. Rogers, Collection: Heat-Resisting Materials under Supersonic Flight Conditions [Russian translation], Metallurgizdat, 212 (1962).
5. D. Maclean, Mechanical Properties of Metals [Russian translation], Izd. ?Metallurgiya?, 132 (1965).