The eigenvalue of a graph is the eigenvalue of its adjacency matrix. A graph G is integral if all of its eigenvalues are integers. In this paper some new classes of integral graphs are constructed.

Carpathian Journal of Mathematics, Vol. 39, No. 1 (2023), pp. 213-230 (18 pages) The normalized distance Laplacian matrix of a connected graph G, denoted by D𝓛(G), is defined by D𝓛(G) = ...