Ching-Shoei Chiang and Sheng-Hsin Tsai and James Chen, The Control Vector Scheme for Design of Planar Primitive PH curves . journal = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology. March 2007, vol. 3(3). 547 - 553 [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/4406.