Daisy, K. Jeya, R. Santrin Sabibha, P. Jeyanthi, and Maged Z. Youssef. 2022. “K-Product Cordial Labeling of Napier Bridge Graphs”. Nepal Journal of Mathematical Sciences 3 (2):59-70. https://doi.org/10.3126/njmathsci.v3i2.49201.