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 2026May19];8(1):#R31. Available from: https://www.combinatorics.org/ojs/index.php/eljc/article/view/v8i1r31