The following publications are possibly variants of this publication:
- Virtual hairy brush for painterly renderingSonghua Xu, Min Tang, Francis C. M. Lau, Yunhe Pan. cvgip, 66(5):263-302, 2004. [doi]
- Virtual hairy brush for digital painting and calligraphySonghua Xu, Francis Chi-Moon Lau, Congfu Xu, Yunhe Pan. chinaf, 48(3):285-303, 2005. [doi]