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="Köhl (né Gramlich), Ralf" or (type any "bookEditor issueEditor" and editor="Köhl (né Gram... Add to list Journal Article A1 open access The endomorphism type of certain bipartite graphs and a characterization of projective planes Ralf Köhl (né Gramlich), Katja Möser and Hendrik Van Maldeghem (UGent) (2013) GRAPHS AND COMBINATORICS. 29(2). p.253-257