1. Introduction to Linear, Parametric and Nonlinear Vibrations;Cartmell,1990
2. Allgemeine Theorie der Stabilität erzwungener Schwingungen elastischer Körper (General theory of stability of forced vibrations of elastic bodies);Mettler;Ing. Arch.,1949
3. Combination resonances in mechanical systems under harmonic excitation;Mettler,1968
4. Linearisierte aeroelastische Analyse einer Windturbine mit Zweiblattrotor (Linearized aeroelastic analysis of a wind turbine with a two-bladed rotor);Kirchgäßner,1986
5. Analytical predictions of a flexible rotor in journal bearings with adjustable geometry to suppress bearing induced instabilities;Dohnal,2015