Geodesic
Sombor index - one year later
Bulletin de l'Académie serbe des sciences. Classe des sciences mathématiques et naturelles, Tome 45 (2020) no. 1.

Voir la notice de l'article provenant de la source eLibrary of Mathematical Institute of the Serbian Academy of Sciences and Arts

The Sombor index $(SO)$ is a vertex--degree--based graph invariant, invented in the Summer of 2020, and made publicly available in early 2021. In less than one year, a remarkable number (almost fifty) research papers on this topological index were produced. In the present article, we summarize the results achieved so far, and offer a few more. 
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     author = {Ivan Gutman},
     title = {Sombor index - one year later},
     journal = {Bulletin de l'Acad\'emie serbe des sciences. Classe des sciences math\'ematiques et naturelles},
     pages = {43 - 55},
     publisher = {mathdoc},
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}
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Ivan Gutman. Sombor index - one year later. Bulletin de l'Académie serbe des sciences. Classe des sciences mathématiques et naturelles, Tome 45 (2020) no. 1. http://geodesic.mathdoc.fr/item/BASS_2020_45_1_a2/