Dvořák Z, Kelly T. Induced 2-Degenerate Subgraphs of Triangle-Free Planar Graphs. Electron. J. Combin. [Internet]. 2018Mar.9 [cited 2026Apr.3];25(1):P1.62. Available from: https://www.combinatorics.org/ojs/index.php/eljc/article/view/v25i1p62