Hyunchul Ahn and William X. S. Wong, Multiclass Support Vector Machines with Simultaneous Multi-Factors Optimization for Corporate Credit Ratings. journal = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology. March 2016, vol. 112(4). 756 - 760 [viewed 27 April 2024]. Available from: https://publications.waset.org/pdf/10004243.