@article{Akazawa2004,
  author={Akazawa, Takashi},
  title={A technique for automatic detection of onset time of P-and S-Phases in strong motion records},
  journal={13th World Conference on Earthquake Engineering},
  year={2004},
  month={August},
  URL={http://www.iitk.ac.in/nicee/wcee/article/13_786.pdf},
}
