The distance spectrum and energy of the compositions of regular graphs. - Dragan Stevanovic; Gopalapillai Indulal (Appl. Math. Lett., 2009)

Distance spectrum of graph compositions. - Gopalapillai Indulal (Ars Math. Contemp., 2009)

The distance spectrum of corona and cluster of two graphs. - Gopalapillai Indulal; Dragan Stevanovic (AKCE Int. J. Graphs Comb., 2015)

Distance spectrum of Indu-Bala product of graphs. - Gopalapillai Indulal; R. Balakrishnan (AKCE Int. J. Graphs Comb., 2016)

New families of integral graphs. - Gopalapillai Indulal (Discret. Math. Algorithms Appl., 2016)

The distance Laplacian and distance signless Laplacian spectrum of the subdivision-vertex join and subdivision-edge join of two regular graphs. - Deena C. Scaria; Gopalapillai Indulal (Discret. Math. Algorithms Appl., 2019)