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    title = "ASME 2017 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference",
    chapter = "Non-Reciprocity in Structures With Nonlinear Internal Hierarchy and Asymmetry",
    year = "2017",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:20180215-140456213",
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    chapter = "On the periodic motions of simple hopping robots",
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    title = "Proceedings, 1990 IEEE International Conference on Robotics and Automation",
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    year = "1990",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:20190611-155909131",
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