6EERC. Loma Prieta Earthquake Reconnaissance Report[R]. Earthquake Spectra, 1990, Supplement to Vol 6.
7NZNSEE. The Loma Prieta, California, Earthquake of October 17, 1989, Report of the NZNSEE Reconnaissance Team[R]. Bulletin of New Zealand Nation Society for Earthquake Engneering, 1990, Vol 23.
8EERC. Northridge Earthquake Reconnaissance Report [R]. Earthquake Spectra,1996,Supplement C to Vol 11.
9NZNSEE. Northridge Earthquake Reconnaissance Report, Report of the NZNSEE Reconnaissance Team on the 17 January 1994 Northridge, Los Angeles Earthquake[R]. Bulletin of New Zealand Nation Society for Earthquake Engneering, 1994, Vol 27(4).