Cheng-Tan Tung , Shu-Cheng Lin , Peterson Julian (2017) “Note on lexicographical ordering”, International Journal of Emerging Trends in Science and Technology, 4(05), pp. 5165-5170. Available at: https://ijetst.igmpublication.org/index.php/ijetst/article/view/1101 (Accessed: 29September2024).