@article{CSIS_2012_9_2_a17,
     author = {Weiqin Chen and Richard Persen},
     title = {Recommending {Collaboratively} {Generated} {Knowledge}},
     journal = {Computer Science and Information Systems},
     publisher = {mathdoc},
     volume = {9},
     number = {2},
     year = {2012},
     url = {http://geodesic.mathdoc.fr/item/CSIS_2012_9_2_a17/}
}