The University of Warwick Library - WebBridge

On the central levels problem
Gregor, Petr.  47th International Colloquium on Automata, Languages, and Programming.  v. 168.   2020-06. p. 60:1 - 60:17... issn: 1868-8969 .   

Online access not found

Sorry - based on the information provided, WebBridge cannot offer appropriate links.