@inproceedings{CTT100552311,
  author = {Ryuzo Ohno and Jaeho Ryu},
  title = {Disaster Education Using a Portable Virtual-reality System and Its Efficiency},
  booktitle = {Proceedings of the Fifth International Conference on Urban Earthquake Engineering},
  year = 2008,
}

@inproceedings{CTT100552310,
  author = {Jaeho Ryu and Ryuzo Ohno},
  title = {Development of Novel Room Relayout Tool Using Real-Time Physics Simulation and Portable VR System for Preparedness of Earthquake Damage},
  booktitle = {Proceedings of the Fourth International Conference on Urban Earthquake Engineering},
  year = 2007,
}