@incollection{Matsuo12,
author = {Takeshi Sakaki and Yutaka Matsuo},
title = {Earthquake Observation by Social Sensors},
booktitle = {Earthquake Research and Analysis},
publisher = {IntechOpen},
address = {Rijeka},
year = {2012},
editor = {Sebastiano D'Amico},
chapter = {15},
doi = {10.5772/29629},
url = {https://doi.org/10.5772/29629}
}