@inbook{https://resolver.caltech.edu/CaltechAUTHORS:20160504-113237163,
    title = "SIGGRAPH '88 Proceedings of the 15th annual conference on Computer graphics and interactive techniques",
    chapter = "A modeling system based on dynamic constraints",
    year = "1988",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:20160504-113237163",
    id = "record",
    isbn = "0-89791-275-6",
    doi = "10.1145/54852.378509"
}