TY - BOOK ID - 145249719 TI - On frequency shifting by elementary modifications of inertia and stiffness PY - PB - Liège : Université de Liège, L.T.A.S. (Laboratoire de Techniques Aéronautiques et Spatiales) = University of Liège, aerospace laboratory (ULg), DB - UniCat UR - https://www.unicat.be/uniCat?func=search&query=sysid:145249719 AB - ER -