@article{https://resolver.caltech.edu/CaltechAUTHORS:20120829-140157241,
    title = "A New Stationary PDF Approximation for Non-linear Oscillators",
    journal = "International Journal of Non-Linear Mechanics",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:20120829-140157241",
    id = "record",
    issn = "0020-7462",
    doi = "10.1016/S0020-7462(99)00048-7",
    volume = "35"
}


@article{https://resolver.caltech.edu/CaltechAUTHORS:20120829-144237178,
    title = "New Approximations for Reliability Integrals",
    journal = "Journal of Engineering Mechanics",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:20120829-144237178",
    id = "record",
    issn = "0733-9399",
    doi = "10.1061/(ASCE)0733-9399(1999)125:4(466)",
    volume = "125"
}


@article{https://resolver.caltech.edu/CaltechAUTHORS:20120829-153106686,
    title = "Approximate Solutions for Nonlinear Random Vibration Problems",
    journal = "Probabilistic Engineering Mechanics",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:20120829-153106686",
    id = "record",
    issn = "0266-8920",
    doi = "10.1016/0266-8920(96)00011-2",
    volume = "11"
}