Infinitely Many Trees with Maximum Number of Holes Zero, One, and Two. - Srinivasa Rao Kola; Balakrishna Gudla; P. K. Niranjan (J. Appl. Math., 2018)

The k-distance chromatic number of trees and cycles. - P. K. Niranjan; Srinivasa Rao Kola (AKCE Int. J. Graphs Comb., 2019)

Some classes of trees with maximum number of holes two. - Srinivasa Rao Kola; Balakrishna Gudla; P. K. Niranjan (AKCE Int. J. Graphs Comb., 2020)

On the radio number for corona of paths and cycles. - P. K. Niranjan; Srinivasa Rao Kola (AKCE Int. J. Graphs Comb., 2020)