@other{https://resolver.caltech.edu/CaltechEERL:1984.EERL-84-04,
    title = "System Identification of Hysteretic Structures",
    url = "https://resolver.caltech.edu/CaltechEERL:1984.EERL-84-04",
    id = "record"
}


@article{https://resolver.caltech.edu/CaltechAUTHORS:20171205-091357492,
    title = "Nonlinear system identification based on modelling of restoring force behaviour",
    journal = "Soil Dynamics and Earthquake Engineering",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:20171205-091357492",
    id = "record",
    issn = "0267-7261",
    doi = "10.1016/S0267-7261(89)80002-8",
    volume = "8"
}