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  author = {Gilbert Siy Ching and ghoraishi m and Markus Landmann and Navarat Lertsirisopon and Jun-ichi Takada and Tetsuro Imai and Itoji Sameda and Hironori Sakamoto},
  title = {Wideband Polarimetric Directional Propagation Channel Analysis inside an Arched Tunnel},
  journal = {IEEE Transactions on Antennas and Propagation},
  year = 2009,
}

@article{CTT100585564,
  author = {Gilbert Siy Ching and M. Ghoraishi and Navarat Lertsirisopon and Jun-ichi Takada and Itoji Sameda and Ryuji Soma and Hironori Sakamoto and Tetsuro Imai},
  title = {Prediction of DSRC Service Over-reach inside an Arched Transportation Tunnel},
  journal = {International Journal of  ITS Research},
  year = 2008,
}