1. Linear theory of micropolar viscoelasticity
2. Micropolar viscoelastic waves
3. R. Kumar and N. Sharma, Effects of viscosity and stiffness on wave propagation in micropolar viscoelastic media, International Journal of Applied Mechanics and Engineering, 14(2009)2, 415–431.
4. N. Sharma,S. Kaushal and R. Kumar, Effect of viscosity and stiffness on amplitude ratios in microstretch viscoelastic media, Applied Mathematics and Information Sciences, 5(2011)2, 321–341.
5. A nonlinear theory of elastic materials with voids