Brešar, Boštjan. “Vizing’s Conjecture for Graphs With Domination Number 3 - a New Proof”. The Electronic Journal of Combinatorics 22, no. 3 (September 20, 2015): P3.38. Accessed March 29, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v22i3p38.