PAVLÍKOVÁ, Soňa. Upper bounds on the HOMO-LUMO spectral gap of graphs. In Booklet of Abstracts for the 56th Czech and Slovak Conference on Graph Theory - CSGT 2021 : Rajecké Teplice, 23-27 August 2021. 1. vyd. Bratislava : Slovenská technická univerzita v Bratislave, 2021, S. 39-39. ISBN 978-80-89829-07-1.