1. G.A. Smolenskii, V.A. Isupov, Dokl. Acad. Nauk SSSR 97, 653 (1954)
2. M.E. Lines A.M. Glass, Principles and Applications of Ferroelectrics and Related Materials, Chapter 9 (Clarendon Press, Oxford, 1979), pp. 28–56
3. G.A. Samara, J. Phys.: Condens. Matter 15, R367 (2003)
4. G.A. Samara, Phys. Rev. B 71, 224108 (2005)
5. G.A. Smolenskii, V.A. Isupov, A.I. Agranovskaya, S.N. Popov, Fizika Tverdogo Tela 2, 2906 (1960)