Graphs whose vertices of degree at least 2 lie in a triangleVinicius L. do Forte, Min Chih Lin, Abilio Lucena, Nelson Maculan, Veronica A. Moyano and Jayme L. SzwarcfiterRAIRO-Oper. Res., 58 6 (2024) 5063-5077DOI: https://doi.org/10.1051/ro/2024198