Freehand drawing system using a fuzzy logic concept. - Sheng Feng Qin; Ivan N. Jordanov; David K. Wright 001 (Comput. Aided Des., 1999)

From on-line sketching to 2D and 3D geometry: a system based on fuzzy knowledge. - Sheng Feng Qin; David K. Wright 001; Ivan N. Jordanov (Comput. Aided Des., 2000)

On-line segmentation of freehand sketches by knowledge-based nonlinear thresholding operations. - Sheng Feng Qin; David K. Wright 001; Ivan N. Jordanov (Pattern Recognit., 2001)

A framework of web-based conceptual design. - Sheng Feng Qin; Robert Harrison; Andrew A. West; Ivan N. Jordanov; David K. Wright 001 (Comput. Ind., 2003)