中国科学院数学与系统科学研究院期刊网
ON THE DISCRETE CONSTRUCTIONS AND SHAPE-PRESERVING PROPERTY OF RATIONAL B-SPLINE CURVES
Lü Wei, Liang You-dong
Acta Mathematicae Applicatae Sinica . 1990, (2): 129 -136 .  DOI: 10.12387/C1990017