@article{katayama15ijcis,
  author = {Shin-ya Katayama and Shun Shiramatsu and Tadachika Ozono and Toramatsu Shintani},
  title = {Generational Layered Canvas Mechanism for Real-Time Collaborative Editing},
  journal = {International Journal of Computer & Information Science},
  publisher = {},
  series = {},
  volume = {16},
  number = {2},
  pages = {30--39},
  year = {2015},
  doi = {},
  url = {}
}