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(In Chinese) J. Chen, L. Sun, and D. Lu, A review of virtual reality, Journal of Tianjin Institute of Textile Science and Technology, 17(2):91-96, 1998.
(In Chinese) L. Sun, J. Xu, J. Chen, and L. Zhou, A design method of variables for parameterization drafting based on shape features, Journal of Tianjin Institute of Textile Science and Technology, 17(2): 32-26, 1998.