Nurdin, Baskoro E.T., Salman A.N.M., Gaos N.N. On total vertex-irregular labellings for several types of trees. A Canadian journal of applied mathematics, computer science and statistics [Internet]. 2010 Sep. 9 [cited 2026 Apr. 18];83. Available from: https://utilitasmathematica.com/index.php/Index/article/view/686