“ANALYSIS OF THICK RECTANGULAR PLATES RESTING ON NONLINEAR WINKLER FOUNDATION”, J. eng. sustain. dev., vol. 20, no. 1, pp. 118–134, Jan. 2016, Accessed: Apr. 27, 2024. [Online]. Available: https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/638