Phongphinittana, E., and P. Jearanaisilawong. “A Microstructurally-based Orthotropic Elasto-plastic Model for Paper and Paperboard”. Applied Science and Engineering Progress, vol. 5, no. 1, Sept. 2013, pp. 19-25, https://ph02.tci-thaijo.org/index.php/ijast/article/view/67339.