Montassier M, Ochem P. Near-Colorings: Non-Colorable Graphs and NP-Completeness. Electron. J. Combin. [Internet]. 2015Mar.6 [cited 2026Mar.29];22(1):P1.57. Available from: https://www.combinatorics.org/ojs/index.php/eljc/article/view/v22i1p57