We show that a cubic graph is \(\frac{3}{2}\)-tough if and only if it is equal to \(K_4\) or \(K_3 \times K_3\) or else is the inflation of a 3-connected cubic graph.
Citation
Bill Jackson, P. Katerinis. A Characterization of 3-Tough Cubic Graphs[J], Ars Combinatoria, Volume 038. 145-148. DOI: .