Duckworth, W., and N. Wormald. “Linear Programming and the Worst-Case Analysis of Greedy Algorithms on Cubic Graphs”. The Electronic Journal of Combinatorics 17, no. 1 (December 10, 2010): R177. Accessed March 14, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v17i1r177.