1. Takahashi K, Kawano M, Momma E, Ono T, Ishii H, Hozumi J. Fire detection by ccd-tv camera in high-speed automobile tunnels. In: JAFSE annual symposium 2001; 2001, p. 284–5.
2. Takahashi K, Momma E, Ono T, Ishii H, Hozumi J. Fire detection of car in highway tunnel by using optical flow. In: JAFSE annual symposium 2002; 2002, p. 298–9.
3. Fujisawa T, Takahashi K, Momma E, Ono T, Ishii H, Hozumi J. Fire detection in road tunnel by neural network applied to itv-camera images. In: JAFSE annual symposium 2003; 2003, p. 142–3.
4. A fire detection system using optical fibers for utility tunnels;Ishii;Fire Safety Journal,1997
5. Model of fire in a tunnel;Beard;Bull Inst Math Appl,1996