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2. The Motion of a Particle on the Bottom of a Rotating Vessel under the Influence of the Gravitational Force. Collected Works, Vol. II, 665–686, Amsterdam 1975.
3. Cf.f.i.F. M. Dimentberg, Flexural Vibrations of Rotating Shafts, London, 1961.
4. W. Thomson, andP. G. Tait,A Treatise on Natural Philosophy, Vol. I, Part 1, 370–415, Cambridge, 1879.
5. H. Ziegler,Stabilitätsprobleme bei geraden Stäben und Wellen, Z. angew. Math. Phys.2, 265–289 (1951);Die Stabilitätskriterien der Elastomechanik, Ing. Arch.20, 49–56 (1952);Linear Elastic Stability, Z. angew. Math. Phys.4, 1–50 (1953).O. Bottema,On the Stability of the Equilibrium of a Linear Mechanical System, Z. angew. Math. Phys.6, 97–104 (1955);The Routh-Hurwitz Condition for the Biquadratic Equation, Proc. Kon. Ned. Ak. v. W., A,59, 403–406, 1956.