@misc{indiciaee8b457d6a8ec, title = {Preface to the Focused Issue on the 22 February 2011 Magnitude 6.2 Christchurch Earthquake}, author = {Erol Kalkan}, year = {2011}, doi = {10.1785/gssrl.82.6.765}, url = {https://pubs.usgs.gov/publication/70236058}, note = {Source identifier: 70236058} }