Panidvadtana, P., S. Sujiva, and S. Srisuttiyakorn. “A Comparison of the Accuracy of Multidimensional IRT Equating Methods for Mixed-Format Tests”. Kasetsart Journal of Social Sciences, vol. 42, no. 1, Feb. 2021, pp. 215–220, https://so04.tci-thaijo.org/index.php/kjss/article/view/249478.