Scott Dyer and  Nicoletta Adamo-Villani,  Animated Versus Static User Interfaces: A Study of Mathsigner™.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    February 2008, vol. 14(2). 399 - 404
    [viewed 11 May 2024]. Available from: https://publications.waset.org/pdf/9299.