Researchr is a web site for finding, collecting, sharing, and reviewing scientific publications, for researchers by researchers.
Sign up for an account to create a profile with publication list, tag and review your related work, and share bibliographies with your co-authors.
Tom Sibley, Stan Wagon. Rhombic Penrose Tilings Can be 3-Colored. The American Mathematical Monthly, 107(3):251-253, 2000. [doi]
Abstract is missing.