VIBRATION ANALYSIS OF THREE-LAYERED FUNCTIONALLY GRADED CYLINDRICAL SHELLS WITH ISOTROPIC MIDDLE LAYER RESTING ON WINKLER AND PASTERNAK FOUNDATIONS. Pakistan Journal of Science, [S. l.], v. 65, n. 2, 2022. DOI: 10.57041/vol65iss2pp%p. Disponível em: https://paas-pk.org/index.php/pjs/article/view/704. Acesso em: 17 feb. 2026.