1. P. G. de Gennes and J.Prost , The Physics of Liquid Crystals , Clarendon Press , Oxford , 2nd edn, 1993
2. L. M. Blinov and V. G.Chigrinov , Electrooptic Effects in Liquid Crystal Materials , Springer , New York , 1996
3. R. Stannarius , in Handbook of Liquid Crystals , ed. J. W. Goodby , P. J. Collings , T. Kato , C. Tschierske , H. Gleeson and P. Raynes , Wiley-VCH , Weinheim , 2014 , vol. 3 , p. 131
4. Piezoelectric Effects in Liquid Crystals
5. Flexoelectricity in Liquid Crystals. Theory, Experiments and Applications , ed. Á. Buka and N. Éber , Imperial College Press , London , 2012