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math.CO2018★ 3 cited
New methods for calculating the degree distance and the Gutman index
Simon Brezovnik, Niko Tratnik
In the paper we develop new methods for calculating the two well-known topological indices, the degree-distance and the Gutman index. Firstly, we prove that the Wiener index of a d…
math.CO2018
Formula for calculating the Wiener polarity index with applications to benzenoid graphs and phenylenes
Niko Tratnik
The Wiener polarity index of a graph is defined as the number of unordered pairs of vertices at distance three. In recent years, this topological index was extensively studied sinc…