1. New type ocean bottom seismograph;Asada;Prog. Abstr. Seismol. Soc. Jap.,1972
2. A pop-up ocean bottom seismograph;Asada;Prog. Abstr. Seismol. Soc. Jap.,1979
3. SEIS-83 numerical modelling of seismic wave field in two dimensional lateral varying layered structures by the ray method;Cerveny,1983
4. SEISOBS; Modified version of SEIS83 for ocean bottom seismograms;Hirata;Zisin,1986
5. Report on DELP 1988 Cruise in the southern Okinawa Trough, Part III: Crustal structure of the southern Okinawa Trough;Hirata;Bull. Earthquake Res. Inst., Univ. Tokyo,1990