1. JMA earthquake early warning;Kamigaichi;Journal of Japan Association for Earthquake Engineering,2004
2. Earthquake early warning in Japan: warning the general public and future prospects;Kamigaichi;Seismol Res. Lett.,2009
3. A new method of quickly estimating epicentral distance and magnitude from a single seismic record;Odaka;Bull. Seismol. Soc. Am.,2003
4. Local characteristics of the slope of the initial part of the P-wave envelope;Nakamura;Seism. Soc. Japan, Fall meeting,2007
5. Analysis of the envelope waveform of the initial part of P-waves and its application to quickly estimating the epicentral distance and magnitude;Tsukada;Zixin 2,2004