Noor Asma Husain and  Mohd Shafry Mohd Rahim and  Abdullah Bade,  Iterative Process to Improve Simple Adaptive Subdivision Surfaces Method with Butterfly Scheme.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2011, vol. 55(7). 743 - 747
    [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/6173.