1. W.H. and
Bragg , W.L. X-Rays and Crystal Structure, 4th edition 203–203. et seqq., where references to the original theoretical work of C. G. Darwin and A. H. Compton are given. See also W. L. Bragg, R. W. James, and C. H. Bosanquet, Phil. Mag. xli. p. 309; xlii. p. 1 (1921); xliv. p. 433 (1922).
2. CXVI. On atomic structure and the reflexion of X-rays by crystals