WIENER TYPE INDICES OF CERTAIN CLASSES OF TREES

The most acclaimed distance based topological index, Wiener index was introduced by the chemist H. Wiener in 1947 [20]. It is defined as the sum of the lengths of the shortest paths between all pairs of vertices of a graph $G$. In this paper, we have computed the Wiener and Terminal Wiener indices of certain classes of trees known as Gutman trees and Kragujevac trees.