Towards a Katona type proof for the 2-intersecting Erdős-Ko-Rado theorem. Howard, Ralph; Károlyi, Gyula; Székely, László A. — 2001 The Electronic Journal of Combinatorics [electronic only]
The combinatorics of evolutionary trees---a survey. Székely, Laszlo A.; Erdős, Péter L.; Steel, M.A. — 1992 Séminaire Lotharingien de Combinatoire [electronic only]
Outerplanar crossing numbers, the circular arrangement problem and isoperimetric functions. Czabarka, Éva; Sýkora, Ondrej; Székely, László A.; Vrt'o, Imrich — 2004 The Electronic Journal of Combinatorics [electronic only]