Caay, M. and Arugay, E. (2016) “On Chromatic Number and Edge-Chromatic Number of the Ottomar Graph”, American Scientific Research Journal for Engineering, Technology, and Sciences, 16(1), pp. 98–107. Available at: https://asrjetsjournal.org/index.php/American_Scientific_Journal/article/view/1255 (Accessed: 4 May 2024).