@article{apostolski2012linked,
  title={Linked Data-Based Social Bookmarking and Recommender System}
  author={Apostolski, Vladimir and Jovanoski, Ljupco and Trajanov, Dimitar}
  journal={ICT Innovations 2012, Web Proceedings ISSN 1857-7288}
  pages={133--142}
  year={2012}
}