Imen Ammari and Mourad Elloumi and Ala Eddine Barouni, Courses Pre-Required Visualization Using Force Directed Placement Technique. journal = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology. April 2013, vol. 76(4). 476 - 480 [viewed 20 September 2024]. Available from: https://publications.waset.org/pdf/3227.