Science of Computer ProgrammingVolume 9, Issue 1, August 1987, Pages 91-100Small programming exercises 18Author links open overlay panelM. RemShow moreShareCitehttps://doi.org/10.1016/0167-6423(87)90027-XGet rights and contentUnder an Elsevier user licenseopen archivePrevious article in issueNext article in issueRecommended articlesCited by (0)Copyright © 1987 Published by Elsevier B.V.