Show 250 5 10 15 20 50 100 250 Sort by year (new to old) Actions Download search results Subscribe to news feed Your filters: cql: keyword exact "hemisystem" cql: author exact 802000050051 or (type exact bookEditor and editor exact 802000050051) Add to list Journal Article A1 A hemisystem of a nonclassical generalised quadrangle John Bamberg (UGent) , Frank De Clerck (UGent) and Nicola Durante (2009) DESIGNS CODES AND CRYPTOGRAPHY. 51(2). p.157-165