Harmonious Colorings of Digraphs. - Suresh Manjanath Hegde; Lolita Priya Castelino (Ars Comb., 2015)

Achromatic number of some classes of digraphs. - Suresh Manjanath Hegde; Lolita Priya Castelino (Discret. Math. Algorithms Appl., 2024)