1. Y. Alizadeh, A. Iranmanesh, T. Došlić, Additively weighted Harary index of some composite graphs. Discrete Math. 313, 36–34 (2013)
2. N. Biggs, E. Lloyd, R. Wilson, Graph Theory (Clarendon Press, Oxford, 1976), pp. 1736–1936
3. K.C. Das, B. Zhou, N. Trinajstić, Bounds on Harary index. J. Math. Chem. 46, 1369–1376 (2009)
4. K.C. Das, K. Xu, I. Gutman, On Zagreb and Harary indices. MATCH Commun. Math. Comput. Chem. 70, 301–314 (2013)
5. L. Feng, Z. Li, W. Liu, L. Lu, D. Stevanovic, Minimal Harary index of unicyclic graphs with diameter at most 4. Appl. Math. Comput. 381, 125–315 (2020)