1. 9. Schmidt F.F. , “Investigation of the Properties of Tantalum and Its Alloys” (Report WADD-TR-59-13, Battelle Memorial Institute, 1959).
2. 35. Timmons G.C. , Climax Metals-Private communication January 1992.
3. 15. Filippi A.M. , “Production and Quality Evaluation of T-222 Tantalum Alloy Sheet” (WANLPR- 9KKO-003, Westinghouse Astronuclear Laboratory, 1968).
4. 30. Hoffmanner A.L. in Refractory Metals and Alloys IV-Research and Development, ed. Jaffee R.I. (French Lick, IN, 3-5 October 1965), pp. 639–657.