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1992 | ||
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2 | EE | Johann Lang, Otto Röschel: Developable (1, n) - Bézier surfaces. Computer Aided Geometric Design 9(4): 291-298 (1992) |
1988 | ||
1 | EE | Johann Lang: On illuminations of C2-surfaces in vector graphic description. Computers & Graphics 12(1): 33-38 (1988) |
1 | Otto Röschel | [2] |