1. D.E. Moncton and J.B. Hastings, private communication (1980).
2. B. Dorner, private communication, 1981.
3. Röntgenstrahlinterferenzen;von Laue,1960
4. X-ray diffraction in the Bragg case at Bragg angles of about π/2
5. Theory of X-Ray Diffraction in Crystals;Zachariasen,1967