. SC, Kalayathankal SJ. On the Sum and Product of Covering Numbers of Graphs and their Line Graphs. Comm. Math. Appl. [Internet]. 2015 Aug. 8 [cited 2026 Mar. 10];6(1):9-16. Available from: https://www.rgnpublications.com/journals/index.php/cma/article/view/275