@article{oai:ir.kagoshima-u.ac.jp:00010019,
 author = {SUENAGA, Katsuyuki and SAKAI, Manabu},
 journal = {鹿児島大学理学部紀要, Reports of the Faculty of Science, Kagoshima University},
 month = {Dec},
 pages = {15--20},
 title = {On Curvatures of Rational Quadratic Bezier segments},
 volume = {32},
 year = {1999}
}