Team, Support. “An Elementary Proof of the Brouwer Fixed Point Theorem: Sompong Dhompongsa, Poom Kumam”. Thai Journal of Mathematics 17, no. 2 (August 1, 2019): 539–542. Accessed April 28, 2024. https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/909.