Franklin C. Crow. The use of grayscale for improved raster display of vectors and characters. In S. H. Chasen, Richard L. Phillips, editors, Proceedings of the 5th Annual Conference on Computer Graphics and Interactive Techniques, SIGGRAPH 1978, Atlanta, GA, USA, August 23-25, 1978. pages 1-5, ACM, 1978. [doi]
Abstract is missing.