Chen, Bang-Yen. “Classification of $h$-Homogeneous Production Functions With Constant Elasticity of Substitution”. Tamkang Journal of Mathematics 43, no. 2 (June 25, 2012): 321–328. Accessed May 1, 2024. https://journals.math.tku.edu.tw/index.php/TKJM/article/view/1145.