B.D. Cullity and S.R. Stock, Elements of X-Ray Diffraction, 3rd Ed., Prentice Hall, (2001)
4-9. A Hull-Debye-Scherrer pattern is made of the intermediate phase InSb with Cu Kalpha radiation. This phase has the zinc-blende structure and a lattice parameter of 6.46 Angstrom. What are the indices of the first two lines on the patter, what is the ratio of the integrated intensit of the first to second?