@article{CSIS_2005_2_2_a2,
     author = {Ryo Takaoka and Toshio Okamoto},
     title = {A {Design} of {Interaction} {Model} among {Pedagogical} {Agents} in {Collaborative} {Teaching} {Process}},
     journal = {Computer Science and Information Systems},
     publisher = {mathdoc},
     volume = {2},
     number = {2},
     year = {2005},
     url = {http://geodesic.mathdoc.fr/item/CSIS_2005_2_2_a2/}
}