00589nas 2200193z- 450 996204281703316(CKB)110978978742213(EXLCZ)9911097897874221320200715cuuuuuuuu -u- -engurmnu|||||CWI QUARTERLYAmsterdamCentrum voor Wiskunde en InformaticaRefereed/Peer-reviewedPrint version: CWI quarterly. (DLC)sf 93093580 (DLC)sn 89033023 (OCoLC)19217524 0922-5366 JOURNAL996204281703316CWI quarterly797613UNISA