1. Flexoelectricity in Solids: From Theory to Applications;Tagantsev,2016
2. Electrical, optic and elastic properties of crystals of diamond type;Mashkevich;Soviet Physics-JETP,1957
3. Piezoelectric effect during inhomogeneous deformation and acoustic scattering of carriers in crystals;Kogan;Soviet Physics-Solid State,1964
4. Second gradient of strain and surface-tension in linear elasticity;Mindlin;International Journal of Solids and Structures,1965
5. Polarization gradient in elastic dielectrics;Mindlin;International Journal of Solids and Structures,1968