@inproceedings{DBLP:conf/wwca/Masunaga98,
  author    = {Yoshifumi Masunaga},
  title     = {The Block-World Data Model for a Collaborative Virtual Environment},
  booktitle = {WWCA},
  year      = {1998},
  pages     = {309-324},
  ee        = {http://dx.doi.org/10.1007/3-540-64216-1_57},
  crossref  = {DBLP:conf/wwca/1998},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

@proceedings{DBLP:conf/wwca/1998,
  editor    = {Yoshifumi Masunaga and
               Takuya Katayama and
               Michiharu Tsukamoto},
  title     = {Worldwide Computing and Its Applications, International
               Conference, WWCA '98, Second International Conference, Tsukuba,
               Japan, March 4-5, 1998, Proceedings},
  booktitle = {WWCA},
  publisher = {Springer},
  series    = {Lecture Notes in Computer Science},
  volume    = {1368},
  year      = {1998},
  isbn      = {3-540-64216-1},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}