@article {poppeliers2013second, AUTHOR = {Poppeliers, Christian and Puno{\v{s}}evac, Predrag}, TITLE = {Three-Dimensional Wave Gradiometry for Polarized Seismic Waves}, JOURNAL = {Bulletin of the Seismological Society of America}, FJOURNAL = {Bulletin of the Seismological Society of America}, VOLUME = {103}, YEAR = {2013}, NUMBER = {4}, PAGES = {2161--2172}, ISSN = {0037-1106}, DOI = {10.1785/0120120165} URL = {http://www.bassaonline.org/content/103/4}, }