References
- J. Devillers and A. T. Balaban, Topological Indices and Related Descriptors in QSAR and QSPR (New York: Gordon & Breach, 1999).
- M. Randić, “On Characterization of Molecular Branching,” Journal of the American Chemical Society 97 (1975): 6609–15.
- L. B. Kier and L. H. Hall, Molecular Connectivity in Chemistry and Drug Research (New York: Academic Press, 1976).
- I. Gutman, and B. Furtula, “Recent Results in the Theory of Randić Index,” Mathematical Chemistry Monographs no. 6 (2008).
- X. Li and I. Gutman, Mathematical Aspects of Randić-Type Molecular Structure Descriptors (Kragujevac: Univ. Kragujevac, 2006).
- B. Zhou and N. Trinajstić, “On a Noval Connectivity Index,” Journal of Mathematical Chemistry 46, no. 4 (2009): 1252–70.
- B. Zhou and N. Trinajstić, “On General Sum-Connectivity Index,” Journal of Mathematical Chemistry 47, no. 1 (2010): 210–8.
- B. Liu, N. Trinajstic, and B. Zhou, “Comparison Between the Sum-Connectivity Index and Product-Connectivity Index for Benzenoid Hydrocarbons,” Chemical Physics Letters 475, no. 1–3 (2009): 146–8.
- S. Fajtlowicz, “On Conjectures of Graffiti-II,” Congress Numericals 60 (1987): 187–97.
- L. Yan, W. Gao, and J. Li, “General Harmonic Index and General Sum Connectivity Index of Polyomino Chains and Nanotubes,” Journal of Computational and Theoretical Nanoscience 12, no. 10 (2015): 3940–4.
- O. Favaron, M. Mahéo, and J.-F. Saclé, “Some Eigenvalue Properties in Graphs (Conjectures of Graffiti-II),” Discrete Mathematics 111, no. 1–3 (1993): 197–220.
- L. Zhong, “The Harmonic Index for Graphs,” Applied Mathematics Letters 25, no. 3 (2012): 561–6.
- L. Zhong, “The Harmonic Index on Unicyclic Graphs,” Ars Combinatoria 104, (2012): 261–9.
- L. Zhong and K. Xu, “The Harmonic Index for Bicyclic Graphs,” Utilitas Mathematica 90, (2013): 23–32.
- A. Ali, L. Zhong, and I. Gutman, “Harmonic Index and its Generalizations: Extremal Results and Bounds,” MATCH Communication in Mathematics in Computer Chemistry 81 (2019): 249–311.
- L. Zhong, and Q. Cui, “On the Harmonic Index and the Average Eccentricity of Graphs,” Utilitas Mathematica 103 (2017): 311–8.
- E. Clar, The Aromatic Sextet (London: Wiley, 1972).
- I. Gutman, “Kekulé Structures in Fluoranthenes,” Zeitschrift Für Naturforschung A 65, no. 5 (2010): 473–6.
- I. Gutman and J. Durdević, “Fluoranthene and its Congeners: A Graph Theoretical Study,” MATCH Communication in Mathematics in Computer Chemistry 60 (2008): 659–70.
- S. J. Cyvin, “Graph-Theoretical Studies on Fluoranthenoids and Fluorenoids: Part 1,” Journal of Molecular Structure: Theochem 262 (1992): 219–31.
- S. J. Cyvin, I. Gutman, Kekulé Structures in Benzenoid Hydrocarbons. “Lecture Notes in Chemistry.” (Berlin (Deutschland): Springer-Verlag, 1988).
- F. Li and Q. Ye, “Second Order Randić Index of Fluoranthene-Type Benzenoid Systems,” Journal of Applied Mathematics and Computing 268 (2015): 534–46.
- F. Li and Q. Ye, “The General Connectivity Indices of Fluoranthene-Type Benzenoid Systems,” Journal of Applied Mathematics and Computing 273 (2016): 897–911.
- J. S. Deogun, X. Guo, W. Wei, and F. Zhang, “Catacondensed Hexagonal Systems with Smaller Numbers of Kekule Structures,” Journal of Molecular Structure: Theochem 639, no. 1–3 (2003): 101–8.
- X. L. Ke, “Atom-Bond Connectivity Index of Benzenoid Systems and Fluoranthene Congeners,” Polycyclic Aromatic Compounds 32, no. 1 (2012): 27–35.
- I. Gutman and S. J. Cyvin, Introduction to the Theory of Benzenoid Hydrocarbons (Berlin: Springer-Verlag, 1990).
- F. Harary and H. Harborth, “Extremal Animals,” Journal of Combinatorics, Information and System Sciences 1 (1976): 1–8.
- R. Cruz, I. Gutman, and J. Rada, “Convex Hexagonal Systems and Their Topological Indices,” MATCH Communication in Mathematics and in Computer Chemistry 68 (2012): 97–108.
- J. Rada, R. Cruz, and I. Gutman, “Benzenoid Systems with Extremal Vertex-Degree-Based Topological Indices,” MATCH Communications in Mathematical and in Computer Chemistry 72, (2014): 125–36.