Acosta, Mara Florencia, Hugo Aimar, and Ivana Gomez. “On Frink’s Type Metrization of Weighted Graphs”. Asian Research Journal of Mathematics 17, no. 1 (February 20, 2021): 26-37. Accessed March 3, 2021. https://journalarjom.com/index.php/ARJOM/article/view/30262.