1. 3.Y. Takagi, et at., in Proc. of SPIE Vol. 563, Anplications of Thin-Film Multilayered Structures to Figured X-Ray Optics, Ed. by C.F. “Marshall,(SPIE, Rellingham, Washington 1985), n. 66.
2. 1.A.L. rreer and F. Spaepen, in Synthetic Modulated Structures, ed. by L.L. Chang and 9.C. Giessen (Academic Press, Orlando, 19R5), p. 410.
3. 2.P.L. Johnson, et at., in Proc. of 5th Int. Conf. on Rapidly Ouenched Metals, Vol. IT, ed. by S. Steeb and F. Warlimont (Nortb-Polland Physics Puhlishing, Amsterdam, 195), P. 1515.
4. 4.Powder Diffraction File, (American Society for Testing and Materials, Philadelphia), W(a) (4-0806), 17( B ) (2-1138) (cited as W30?), W2C (20-1315), WC (25-1047) and WClx (20-1316).