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M. Hinze, A. Schmidt, and R. Leine. Proceedings of the 2019 International Conference on Fractional Calculus Theory and Applications (ICFCTA 2019), Bourges, France, (2019)
R. Leine, and C. Glocker. Proceedings of the Design Engineering Technical Conferences & Computers and Information in Engineering Conference (DETC 2003), ASME Symposium on Nonlinear Dynamics In Engineering Systems, Chicago, USA, (September 2003)