S. T. Algermissen; J. W. Dewey; C. J. Langer; W. H. Dillinger (1974), "The Managua, Nicaragua, earthquake of December 23, 1972: Location, focal mechanism, and intensity distribution", Bulletin of the Seismological Society of America, 64 (4): 993–1004, Bibcode:1974BuSSA..64..993A, doi:10.1785/BSSA0640040993, S2CID130171159
S. T. Algermissen; J. W. Dewey; C. J. Langer; W. H. Dillinger (1974), "The Managua, Nicaragua, earthquake of December 23, 1972: Location, focal mechanism, and intensity distribution", Bulletin of the Seismological Society of America, 64 (4): 993–1004, Bibcode:1974BuSSA..64..993A, doi:10.1785/BSSA0640040993, S2CID130171159
S. T. Algermissen; J. W. Dewey; C. J. Langer; W. H. Dillinger (1974), "The Managua, Nicaragua, earthquake of December 23, 1972: Location, focal mechanism, and intensity distribution", Bulletin of the Seismological Society of America, 64 (4): 993–1004, Bibcode:1974BuSSA..64..993A, doi:10.1785/BSSA0640040993, S2CID130171159