Media type: E-Article Title: A computer program for hill-shading digital topographic data sets Contributor: Pelton, Colin Published: Elsevier BV, 1987 Published in: Computers & Geosciences, 13 (1987) 5, Seite 545-548 Language: English DOI: 10.1016/0098-3004(87)90055-0 ISSN: 0098-3004 Origination: Footnote: