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.
Andrew K. Skidmore. A comparison of techniques for calculating gradient and aspect from a gridded digital elevation model. International Journal of Geographical Information Science, 3(4):323-334, 1989. [doi]
Abstract is missing.