1. J. Dumond and J.P. Youtz: J. Appl. Phy. 11, 357 (1940)
2. Troy W. Barbee, Jr., and Douglas L. Keith: “Synthesis of Metastable Materials by Sputter Deposition Techniques” in Synthesis and Properties of Metastable Phase (ed. by E.S. Machlin and T.J. Rowland) AIME, New York, N.Y. 93 (1980)
3. Troy W. Barbee, Jr.: “Sputtered Layered Synthetic Microstructure (LSM) Dispersion Elements”, in Low Energy X-Ray Diagnostics in 1981 (ed. by D.T. Attwood and B.L. Henke), AIP Conf.Proc. No. 75, AIP, New York, 131 (1981)
4. E. Spiller: “Evaporated Multilayer Dispersion Elements for Soft X-Rays”, Ibid., 124
5. B.L. Henke: “Low Energy X-Ray Spectroscopy with Crystals and Multi-layers”, Ibid., 85