Sreeja K U, Vinodkumar P B, and Ramkumar P B. “Characterization of Quadratic Independence Polynomial of Path Graph, Cycle Graph and Wheel Graph”. Malaya Journal of Matematik, vol. 9, no. 01, Jan. 2021, pp. 1029-34, https://www.malayajournal.org/index.php/mjm/article/view/1212.