1. On first strain-gradient theories in linear elasticity;Mindlin;Int. J. Solids Struct.,1968
2. Nonlocal polar elastic continua;Eringen;Internat. J. Engrg. Sci.,1972
3. Elastic materials with couple-stresses;Toupin;Arch. Ration. Mech. Anal.,1962
4. W.T. Koiter, Couple-stresses in the theory of elasticity I & II, in: Proceedings of the Koninklijke Nederlandse Academies van Wetenschappen, Vol. 67, 1964, pp. 17–44.
5. Influence of couple-stresses on stress concentrations;Mindlin;Exp. Much.,1963