Closed-Form Analysis of Stress and Deformation in Functionally Graded Multi-Layer Hyperelastic Cylinders Under Internal Pressure. - Sarlakian, Elaheh; Askari-Sedeh, Mahdi; Ostadrahimi, Alireza; Choi, Eunsoo; Baniassadi, Majid; Baghani, Mostafa (Materials (1996-1944), 2026)