Tham khảo Thang_độ_lớn_mô_men

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    WikiPedia: Thang_độ_lớn_mô_men http://www.britannica.com/EBchecked/topic/1052580 http://www.gps.caltech.edu/uploads/File/People/kan... http://adsabs.harvard.edu/abs/1979JGR....84.2348H http://adsabs.harvard.edu/abs/1995JGR...10018205C http://earthquake.usgs.gov/learning/faq.php?catego... http://www.agu.org/pubs/crossref/1995/95JB01969.sh... //dx.doi.org/10.1029%2F95JB01969 //dx.doi.org/10.1029%2FJB084iB05p02348 http://bachkhoatoanthu.vass.gov.vn/noidung/tudien/... https://web.archive.org/web/20100821063413/http://...