GUTMAN, Ivan. On vertex and edge degree-based topological indices. Vojnotehnički glasnik / Military Technical Courier, [S. l.], v. 71, n. 4, p. 855–863, 2023. DOI: 10.5937/vojtehg71-45971. Dostupno na: https://asistent.ceon.rs/index.php/vtg/article/view/45971. Pristupljeno: 12 jul. 2026.