@article{CSIS_2012_9_2_a21,
     author = {Lu Xiao},
     title = {Exploring the {Use} of {Contextual} {Modules} for {Understanding} and {Supporting} {Collaborative} {Learning} {Activities:} {An} {Empirical} {Study}},
     journal = {Computer Science and Information Systems},
     publisher = {mathdoc},
     volume = {9},
     number = {2},
     year = {2012},
     url = {http://geodesic.mathdoc.fr/item/CSIS_2012_9_2_a21/}
}