1. Lord Rayleigh, Phil. Mag., Ser. 4, 47, 81 (1874); Scientific Papers, 1 (1869–1881), 199 (Cambridge University Press, 1899).
2. Hashimoto, H., and Uyeda, R., Acta Cryst., 10, 143 (1957).
3. Bassett, G. A., Menter, J. W., and Pashley, D. W., Proc. Roy. Soc., A, 246, 345 (1958).
4. Guild, J., The Interference Systems of Crossed Diffraction Gratings (Clarendon Press, Oxford, 1956).
5. Guild, J., Diffraction Gratings as Measuring Scales (Oxford University Press, London, 1960).