@article{CTT100737731,
  author = {Ohkubo R. and Muromachi Y.},
  title = {Tourist Travel Behavior Analysis Based on Image and Text Data with Direction and Angle of Elevation (in Japanese)},
  journal = {Journal of the City Planning Institute of Japan},
  year = 2016,
}

@article{CTT100737863,
  author = {山守雅也 and 曹雪慧 and 大久保立樹 and 室町泰徳},
  title = {スマートフォンを利用した外国人観光客の関心対象把握に関する研究},
  journal = {土木計画学研究・講演集},
  year = 2016,
}

@article{CTT100737738,
  author = {Ohkubo R. and Muromachi Y.},
  title = {A Study of Destination Images of Foreign Tourists to Japan by Analyzing Travel Guidebook and Review Site (in Japanese)},
  journal = {Journal of the City Planning Institute of Japan},
  year = 2014,
}