@other{https://resolver.caltech.edu/CaltechEERL:1995.EERL-95-06,
    title = "Ambient vibration studies of three steel-frame buildings strongly shaken by the 1994 Northridge earthquake",
    year = "2005",
    url = "https://resolver.caltech.edu/CaltechEERL:1995.EERL-95-06",
    id = "record"
}


@other{https://resolver.caltech.edu/CaltechEERL:1997.EERL-97-09,
    title = "A probabilistic treatment of uncertainty in nonlinear dynamical systems",
    year = "1997",
    url = "https://resolver.caltech.edu/CaltechEERL:1997.EERL-97-09",
    id = "record"
}