@other{https://authors.library.caltech.edu/records/j0gm6-emy63,
    author = "Seifert, Howard S. and Mills, Mark M. and Summerfield, Martin",
    title = "The Physics of Rockets",
    year = "2015",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:20151125-103838789",
    id = "https://authors.library.caltech.edu/records/j0gm6-emy63"
}