1. Eringen, A. C. On differential equations of nonlocal elasticity and solutions of screw dislocation and surface waves. Journal of Applied Physics, 549, 4703–4710 (1983)
2. Eringen, A. C. Nonlocal Continuum Field Theories, Springer, New York (2002)
3. Mindlin, R. D. and Tiersten, H. F. Effects of couple-stresses in linear elasticity. Archive for Rational Mechanics and Analysis, 111, 415–448 (1962)
4. Koiter, W. T. Couple stresses in the theory of elasticity. Proceedings of the Koninklijke Nederlandse Akademie van Wetenschappen (B), 671, 17–44 (1964)
5. Yang, F., Chong, A. C. M., Lam, D. C. C., and Tong, P, Couple stress based strain gradient theory for elasticity. Couple stress based strain gradient theory for elasticity 3910, 2731–2743 (2002)