Tomoya Okubo and  Kuninori Nakamura and  Shin-ichi Mayekawa,  A Formulation of the Latent Class Vector Model for Pairwise Data.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2009, vol. 30(6). 1600 - 1603
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/9031.