Howard R, Károlyi G, Székely LA. Towards a Katona Type Proof for the 2-intersecting Erdős-Ko-Rado Theorem. Electron. J. Combin. [Internet]. 2001Oct.9 [cited 2026Mar.17];8(1):R31. Available from: https://www.combinatorics.org/ojs/index.php/eljc/article/view/v8i1r31