@book{ BA71715819, author = "Air Force Flight Dynamics Laboratory (U.S.) and Air Force Institute of Technology (U.S.)", title = "Matrix methods in structural mechanics : proceedings of the conference held at Wright-Patterson Air Force Base, Ohio 26-28 October 1965", publisher = "Wright-Patterson Air Force Base", year = "1966", URL = "https://ci.nii.ac.jp/ncid/BA71715819" }