Show 10 5 10 15 20 50 100 250 Sort by year (new to old) Actions Save this search Download search results Subscribe to news feed Your filters: cql: parent exact "Recreational mathematics magazine" Add to list Journal Article A4 open access 'A difficult case' : Pacioli and Cardano on the Chinese Rings Albrecht Heeffer (UGent) and Andreas M. Hinz (2017) Recreational mathematics magazine. 4(8). p.5-23