Lower bound eigenvalues of a Timoshenko-Ehrenfest vibrating beam using the Wittrick-Williams algorithm by Andrew Watson, W Paul Howson, Antonio Zippo, Francesco Pellicano

“…This results in real eigenvalues that are bounded below. While this approach necessitates the first eigenvalue to be real, this paper illustrates that the first eigenvalue can be either positive (as commonly seen in structural mechanics) or negative. …”
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Predicting and measuring vertical track displacements on soft subgrades by M.E. Heelis, A.C. Collop, A.R. Dawson, D.R. Chapman, Victor V. Krylov

“…A model of a Euler beam on a Winkler foundation is studied and used to demonstrate how the magnitude of displacements are dependent on train speed and track damping. …”
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Constant factor delta modulation - a new instantaneously adaptive delta modulation system by U Aye T. Kyaw

“…Several computer simulations have been made for the design of the Constant Factor delta modulator, JAYANT's CODER, WINKLER's H.I.D.M. coder and linear delta modulator. …”
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