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----
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Costa
Sousa M, Buchanan J. (1999b).
Observational model of blenders and erasers
in
computer-generated pencil rendering.
Graphics
Interface
(GI
'99),
pp. 157-166. Kingston, ON, Canada. 1999/06.
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Related:
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Costa
Sousa, PhD (1999).
Computer-Generated
Graphite Pencil Materials and
Rendering.
Computer Science, University of
Alberta, Canada.
Costa
Sousa & Buchanan '00,
'99a
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