A. A. Antony mary, A. Amutha, and M. S. Franklin Thamil Selvi, “A Study on Slope Number of Certain Classes of Bipartite Graphs”, IJET, vol. 7, no. 4.10, pp. 440–442, Oct. 2018, doi: 10.14419/ijet.v7i4.10.21036.