1. Matrix Analysis;Bhatia,1997
2. Ein Reibschwinger mit Selbsterregung ohne fallende Kennlinie;Brommundt;Z. Angew. Math. Mech,1995
3. Stabilization of linear systems by rotation;Crauel;J. Diff. Eqns,2007
4. Gyroscopic stabilization of indefinite damped systems;Kliem;Z. Angew. Math. Mech,1997
5. Indefinite damping in mechanical systems and gyroscopic stabilization;Kliem;Z. Angew. Math. Phys,2009