@misc {IOPORT.70513794,
    author       = {Takhirov, Naimdjon and S{\o}lvberg, Ingeborg and Aalberg, Trond},
    title        = {Organizing learning objects for personalized elearning services},
    howpublished = {ECDL, 384-387 (2009).},
    year         = {2009},
    doi          = {10.1007/978-3-642-04346-8_40},
    identifier   = {70513794},
}