@article{weko_13753_1, author = "Hui,Guan and Tatsuo,Torii", title = "An Interactive Method for Designing Smooth Convex Curves by Using a Cubic B - spline Formulation", journal = "情報処理学会論文誌", year = "1995", volume = "36", number = "12", pages = "2754--2760", month = "dec" }