Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleProblems.AuthorsGibbs, Richard A.; Szücs, LászlóPublicationSchool Science & Mathematics, 1992, Vol 92, Issue 2, p105ISSN0036-6803Publication typeArticleDOI10.1111/j.1949-8594.1992.tb12153.x