Every reference with a DOI in the deposited reference list resolved to a known
work in Crossref or DataCite at the dated check, and none carried a retraction,
withdrawal, or removal notice.
The 11 references without a DOI — listed, not checked
no DOI — not checkedSzczygielski, W. M., ?Dynamisches Verhalten eines schnell drehenden Rotors bei Anstreifvorgängen?, Zürich, ETH, Dissertation, No 8094, 1986.
no DOI — not checkedMiyamoto M., ?Effect of dry friction in link suspension on forced vibration of two-axle car?,Quarterly Reports 14, 1973, 99?103.
no DOI — not checkedDenHartog J. P., ?Forced vibrations with continued Coulomb and viscous friction?,Transaction ASME APM-53 9, 1931, 107?115.
no DOI — not checkedUtkin V. I.,Sliding Modes and Their Application in Variable Structure Systems, English Translation Moscow: MIR Publication, 1978.
no DOI — not checkedStelter, P. and Popp, K., ?Chaotic behaviour of structures excited by dry friction forces?,Proceedings of Workshop on Rolling Noise Generation, Berlin (ed. M. Heckl), 1989, 102?111.
no DOI — not checkedStelter, P., ?Reibungserregte Schwingungen eines Kragbalkens?,ZAMM 71, 1991, 75?78.
no DOI — not checkedStelter, P., ?Nichtlineare Schwingungen reibungserregter Strukturen?,VDI Fortschrittsherichte, Reihe 11 Schwingungstechnik 137, 1990.
no DOI — not checkedStelter, P. and Sextro, W., ?Bifurcations in dynamical systems with dry friction?.Proceedings of Bifurcations and Chaos, Wurzburg, Aug. 20?24, 1990, Birkhauser, Basel, 311?315.
no DOI — not checkedMueller P. C., ?Indirect measurement of nonlinear effects by state observers?,Proceedings of IUTAM Symposium on Nonlinear Dynamics in Engineering Systems, University of Stuttgart, FRG, Aug. 21?25, 1990, Springer, Berlin, 1990 205?215.
no DOI — not checkedGrassberger P. and Procaccia I., ?Measuring the strangeness of strange attractors?,Physica 9D, 1983, 189?208.
no DOI — not checkedStelter P. and Pfingsten T., ?Calculation of the fractal dimension via the correlation integral?,Chaos. Solitons and Fractals ? Applications in Science and Engineering, Pergamon Press, New York, 1991.
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