Show 10 5 10 15 20 50 100 250 Sort by year (new to old) Actions Download search results Subscribe to news feed Your filters: cql: author="Koolen, Jack H." or (type any "bookEditor issueEditor" and editor="Koolen, Jack H.") Add to list Journal Article A1 open access An infinite class of Neumaier graphs and non-existence results Aida Abiad (UGent) , Wouter Castryck (UGent) , Maarten De Boeck (UGent) , Jack H. Koolen and Sjanne Zeijlemaker (2023) JOURNAL OF COMBINATORIAL THEORY SERIES A. 193. Add to list Journal Article A1 open access Neumaier graphs with few eigenvalues Aida Abiad (UGent) , Bart De Bruyn (UGent) , Jozefien D'haeseleer (UGent) and Jack H. Koolen (2022) DESIGNS CODES AND CRYPTOGRAPHY. 90(9). p.2003-2019 Add to list Journal Article A1 An application of Hoffman graphs for spectral characterizations of graphs Qianqian Yang, Aida Abiad (UGent) and Jack H. Koolen (2020) ELECTRONIC JOURNAL OF COMBINATORICS. 24(1).