@article{weko_33717_1,
   author	 = "Hagiwara,Takahiro and Karakawa,Ikuo and Kayano,Ichiro and Kaminuma,Katsutada",
   title	 = "Foreshocks, Aftershocks and an Earthquake Swarm Detected by the Micro-earthquake Observation",
   journal	 = "東京大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo",
   year 	 = "1963",
   volume	 = "41",
   number	 = "3",
   pages	 = "659--680",
   month	 = "sep"
}