1. Whatmore, R.W.: Pyroelectric devices and materials. Rep. Prog. Phys. 49(12), 1335 (1986)
2. Whatmore, R.W., Watton, R.: Pyroelectric materials and devices. In: Capper, P., Elliott, C.T. (eds.) Infrared Detectors and Emitters: Materials and Devices, pp. 99–148. Kluwer Academic Publishers, The Netherlands (1998)
3. Evans, R.C.: An Introduction to Crystal Chemistry. Cambridge University Press, Cambridge (1964)
4. Whatmore, R.W.: Ferroelectric Materials. In: Kasap, S., Capper, P., (eds.) Handbook of Electronic and Photonic Materials, pp 597–623. Springer, Heidelberg (2006)
5. Nye, J.F.: Physical properties of crystals: their representation by tensors and matrices. In: Oxford Science Publications. Clarendon Press, Oxford (1985)