Marek Z. Reformat Patricia M. Boechler Fuzziness and Semantic Web Technologies in Personalized eLearning. 2013 EUSFLAT Conf. https://doi.org/10.2991/eusflat.2013.121 conf/eusflat/2013 db/conf/eusflat/eusflat2013.html#ReformatB13