P 6 True, H. & Nielsen, H.; Theorie und Konstruktion des Whirlpools. Brauwissenschaft 21 (1968) 342-346.

P 61 Herfort, P. & True, H.: Bifurcation and Non-linear Stability of Solutions of the Quasi-Geostrophic Equation. Gerlands Beitr. Geophysik, Leipzig 86 (1977) No. 6, 425-442.

P 64 True, H.: Branching Solutions of Nonlinear Equations and Their Stability as Applied to the Theory of Heat and Mass Exchange. Metalurgia I Odlewnictwo Tom 3 (1977) No. 1, 87-106.

P 65 True, H.: Branching Solutions of Nonlinear Equations and Their Stability as Applied to the Theory of Combustion Process. Part 2. Metalurgia I Odlewnictwo Tom 4 (1978) No. 1, 38-70.

P 71 Iooss, G.; Nielsen, H.B. & True, H.: Bifurcation of the Stationary Ekman Flow into a Stable Periodic Flow. Archive for Rational Mechanics and Analysis 68 (1978) 227-256.

P 72 True, H.: On the Quasi-Geostrophic Approximation of Large-Scale Atmospheric Flows. Zeit. Angew. Math. Mech. 58 (1978) T345-T347.

P 78 True, H.: Bifurcation of Stationary Solutions for the Quasi-Geostrophic Equation with Nonlinear Boundary Conditions. Archives of Mechanics 30 (1978) 4/5, 657- 661.

P 86 True, H.: The Direction of the Secondary Wave Motion in the Ekman Boundary Layer. Math. Meth. in Appl. Sci. 1 (1979) 491-497.

P 90 Nielsen, H.B. & True, H.: Numerical Solution of the Nonlinear Stability of an Incompressible Ekman Boundary Layer. Proc. 6th International Conference on Numerical Methods in Fluid Dynamics, Tblisi, 1978. Lecture Notes in Physics, Springer Berlin, Heidelberg, New York 90 (1979) 410-415.

P 98 True, H. & Nielsen, H. Bruun: On Bifurcation of Stable Periodic Flows in an Ekman Layer and in a Convection Boundary Layer, Laminar-Turbulent Transition. IUTAM Symposium Stuttgart, Germany, September 16-22, Springer-Verlag (1979) 405-414.

P 100 Nielsen, H.B. & True, H.: Numerical Investigation of the 3-dimensional Stability of a Convective Flow in a Slot. Boundary and Interior Layers -Computational and Asymptotic Methods. Proceedings of the BAIL I Conference held at Trinity College, Dublin, June (1980) 381-386.

P 101 Ladyzhenskaya, O.A., Solonnikov, V.A. & True, H.: Resolution des é quations de Stokes et Navier-Stokes dans des tuyaux infinis. C.R. Acad. Sc. Paris 292 (1981) 251-254.

P 139 True, H.: Bifurcation Theory, Introduction and Examples of Application of the Lyapunov-Schmidt Method. Bifurkacja i Zagadniennia Matematyczne Rownan Naviera-Stokesa, Wroclaw, Warszawa, Krakow, Gdansk, Lodz. Zaklad Narodowy Imienia Ossolinskich Wydawnictwo Polskiej Akademii Nauk (1983) 95-164.

P 165 True, H.: & Kaas-Petersen, C.: A Bifurcation Analysis of Nonlinear Oscillations in Railway Vehicles. Vehicle System Dynamics 12 (1983) 2-3. (extensive summary).

P 173 True, H. & Kaas-Petersen, C.: A Bifurcation Analysis of Nonlinear Oscillations in Railway Vehicles. Vehicle Systems Dynamics 13 (1984) 655-665.

P 175 Nielsen, H.B. & True, H.: A Spline-Galerkin Method for Hopf Bifurcation Problems Advances in Computer Methods for Partial Differential Equations, V. Proceedings of the Fifth IMACS International Symposium on Computer Methods for Partial Differential Equations, Bethlehem, Pennsylvania, USA, June 19-21, 5 (1984) 463- 468.

P 199 True, Hans & Kaas-Petersen, Chr.: Quasi-periodic Oscillations in Railway Vehicles. Tenth International Conference on Nonlinear Oscillations, Varna, Bulgaria, September 12-17, 1984 (1985) 223-226.

P 200 Kaas-Petersen, Chr. & True, Hans.: Periodic, Bi-periodic and Chaotic Dynamical Behavior of Railway Vehicles. Vehicles System Dynamics 14 (1985) 194-196. (extensive summary).

P 211 True, H.: Bifurcations to Time-Dependent Flow in Convection. In HTD-Vol. 54, W.S. Saric (ed.): Stability in Convective Flows: ASME, New York. Proc. of the 1985 ASME Meeting, Miami Beach, Florida, Nov. 17-22, 1985, 69-76.

P 234 Kaas-Petersen, Christian & True, Hans: Periodic, Biperiodic and Chaotic Dynamical Behaviour of Railway Vehicles, Intern. J. of Vehicle Mechanics and Mobility, Vehicle System Dynamics 15 (1986) 208-221.

P 241 True, Hans: ICE som grundlag for fremtidens tog hos DSB. DSBbladet (1987) nr. 1, 32-35.

P 246 True, Hans. Bifurcation Problems in Railway Vehicle Dynamics. In International Series of Numerical Mathematics 79 . Bifurcation, Analysis, Algorithms, Applica- tions. Proceedings of Conf. Univ. of Dortmund, August 1986, Birkhauser Verlag, (1987)

P 252 True, Hans: Nonlinear Dynamics of Railway Vehicles. IASTED Intern. Symposium: Modelling, Identification and Control. M.H. Hamza, ed. Proceedings of Symposium at Grindelwald, Switzerland, Feb. 1987, Acta Press (1987) 333-336.

P 284 True, H.: A Method to Investigate the Nonlinear Oscillations of a Railway Vehicle. Symposium on Appl. Mechanics, Rail Transportation, Proc. of ASME Conference 1988, Chicago, USA, Nov. 27 - Dec. 2, 1988, 101-106.

P 317 True, H.: Chaotic Motion of Railway Vehicles. The Dynamics of Vehicles on Roads and on Tracks, Ron J. Anderson (Ed.) Proc. of 11th IAVSD Symposium, Kingston, Ontario, Canada, August 21-25, 1989, 578-587.

P 380 True, Hans: Railway Vehicle Chaos and Asymmetric Hunting, Sauvage, Gilles (Ed.): The Dynamics of Vehicles on Roads and on Tracks. Proceedings of 12th IAVSD Symposium, Lyon, France, August 26-30, 1991. Supplement to Vehicle Dynamics, volume 20. Swets & Zeitlinger 1992, 625-637.

P 382 True, Hans: Asymmetric Hunting and Chaos Motion of Railroad Vehicles. Larson, Thomas S. & Aaron C. James (Eds.): Proceedings of the 1992 ASME/IEEE Spring Joint Railway Conference, Atlanta, Georgia, March 31 - April 2, 1992, 25-40.

P 386 Knudsen, Carsten,; Rasmus Feldberg & Hans True: Bifurcations and Chaos in a model of a Rolling Railway Wheelset. Phil. Trans. R. Soc. Lond. A 338 (1992) 455- 469.

P 399 True, Hans: Han forsker i sving i bogier. DSBbladet nr. 7 (1992) 32-33.

P 420 True, H.: Dynamics of a Rolling Wheelset. Chaos and Noise in Dynamic Systems, (Eds. T. Kapitaniak and J. Brindley), Applied Mechanics Reviews 46, no. 7 (1993) 438-444.

P 421 True, H.: Some Recent Developments in Nonlinear Railway Vehicle Dynamics. 1st European Nonlinear Oscillations Conference. Edwin Kreuzer and Gü nter Schmidt (eds.) Proc. of the Intern. Conf. in Hamburg, Aug. 16-20, 1993. Akademie Verlag (1993) 129-148.

P 422 True, H. & J.C. Jensen: Parameter Study of Hunting and Chaos in Railway Vehicle Dynamics. 13th IAVSD Symp. on Dynamics of Vehicles on Roads and Tracks. Chengdu, China, August 23-27, 1993. Southwest Jiaotong Univ. Press, China (1993) 225-227.

P 430 True, Hans: Chaotic Motion and Asymmetric Oscillations of Railway Vehicles. Proc. II Intern. Symp. on Technological Innovation in Guided Transports, Sept. 28-30, 1993, Lille France (1993) 727-736.

P 450 Rose, M., & True, H.: Nonlinear Dynamics of Railway Vehicles. Nonlinear Science Today 3 (1993) 1-4.

P 458 True, Hans: Does a Critical Speed for Railroad Vehicles exist? Proceedings of the 1994 ASME/IEEE/AREA Joint Railroad Conference, Chicago, Illinois. ASME (1994) 125-131.

P 459 True, Hans, & Jensen, Jens Christian: Parameter Study of Hunting and Chaos in Railway Vehicle Dynamics. Lugner, Peter; Hedrick, J. Karl (Eds.): Vehicle System Dynamics. Proc. of 13th IAVSD Symposium August 23-27, 1994, Chengdu, Sichuan, China. Swets and Zeitlinger (1994) 508-520.

P 460 Mosekilde, Erik, & True, Hans: Nonlinear Dynamics: The Scope for a New Investment Technology. Gestion Collective, Technologies 94, No. 8, April 1994, 5-9.

P 463 True, Hans: On a New Phenomenon in Bifurcations of Periodic Orbits. Chossat, Pascal (Ed.): Dynamics, Bifurcation and Symmetry. New Trends and New Tools. Kluwer Academic Publishers (1994) 327-331.

P 466 True, Hans: Chaos in Railroad Vehicle Dynamics. Newman, Ronald R. (Ed.): Rail Transportation 1994, ASME RTD-Vol. 8. 1994. Proc. of International Mechanical Engineering Congress and Exposition, Chicago, Illinois, November 6-11, (1994) 37-48.

P 476 Knudsen, C.; Slivsgaard, E.; Rose, M.; True, H. ; & Feldberg, R.: Dynamics of a Model of a Railway Wheelset. Non-linear Dynamics 6 (1994), 215-236.

P 477 Slivsgaard, E.; & True, H.: Chaos in Railway-Vehicle Dynamics. Non-linearity and Chaos in Engineering Dynamics. Thompson, J.M.T.; Bishop, S.R. (Eds.). John Wiley and Sons Ltd., (1994) 183-192.

P 490 True, Hans, & Jensen, Jens Christian: Chaos and Asymmetry in Railway Vehicle Dynamics. Periodica Polytechnica Ser. Transp. Eng., Vol. 22, No. 1 (1994) 55-68.

P 557 True, Hans: Chaos and its Role in Design and Simulation of Railway Vehicles. China-Germany symposium on High speed Railway vehicle/track System Dynamics, Beijing, September 25-29 1995. Qiyong He, Klaus Knothe (Eds.), Chinese Academy of Railway Sciences, Beijing, China, (1996) 125-145.

P 558 Slivsgaard, E,; & True, H.: Dynamics of a Single-Axle Steered Bogie. Interaction between Dynamics and Control in Advanced Mechanical Systems. Proc. of the IUTAM Symposium, Eindhoven, The Netherlands, 21-26 April 1996, D.H. Van Campen (Ed.). Kluwer Academic Publishers. Dordrecht/Boston/London., 1997 (375-382).

P 565 Isaksen, Preben and True, H.: On the Ultimate Transition to Chaos in the Dynamics of Cooperrider's Bogie. Chaos, Solitons & Fractals. Vol. 8, No. 4 (1997), Elsevier Science Ltd., Great Britain, pp. 559-581.

P 573 Jensen, Carsten Nordstrøm; & True, H. : On a New Route to Chaos in Railway Dynamics. Nonlinear Dynamics, (13) Kluwer Academic Publishers 1997, 117-129.

P 579 True, Hans (ES-Consult AG); Jensen, Jens Christian; Slivsgaard, Eva: Nichtlineare Eisenbahndynamik und Chaos. Nichtlineare Dynamik, Chaos und Strukturbildung, Proceedings der 6. Jahrestagung der Chaosgruppe, (1996), 57-69.

P 580 True, Hans; Examples of Chaotic Motion of Railroad Vehicles in Theory and Experiment.RTD-Vol. 13 Transportation ASME 1997, 13-17.

P 610 Jensen, Carsten Nordstrøm; True, H.: Dynamics of an electrical overhead line system and moving pantographs. Proceedings of the 15th IAVSD Symposium, Budapest, August 25-29, 1997. Vehicle System Dynamics Supplement 28 (1998) 104-113.

P 611 Jensen, Jens Chr; Slivsgaard, Eva and True, H.: Mathematical Simulation of the Dynamics of the Danish IC3 train. Proceedings of the 15th IAVSD Symposium, Budapest, August 25-29, 1997. Vehicle System Dynamics Supplement 28 (1998) 760-765.

P 612 Nordstrøm Jensen, Carsten; Golubitsky, Martin; True, Hans: Symmetry, Generic Bifurcations, and Mode Interaction in Nonlinear Railway Dynamics Proceedings of the IUTAM Symposium, Ithaca, NY, USA,July 27 - August 1, 1997, Kluwer Academic Publishers, Netherlands (1998), pp. 387-396.

P 615 True Hans; Jensen, Jens Christian; Slivsgaard, Eva: Einfluss von Unstetigkeiten in der Rad/Schiene Geometrie auf die Systemdynamik Von Schienenfahrzeugen, Bahn-Bau '98, Berlin, October 28-30, 1998, pp. 81-90

P 618 True, Hans; Jensen, Jens Christian; Slivsgaard, Eva: Systemdynamik von Schienenfahrzeugen, EI, Der Eisenbahn Ingenieur (2) 1999) 37-42 P 626 True, Hans; Jensen, Jens Christian; Slivsgaard, Eva: Non-linear Railway dynamics and chaos, Proceedings, 5th Mini conference on vehicle system dynamics, identification and anomalies, Technical University of Budapest, Hungary, Budapest 11-13 November 1996, ISBN 963-420-513-5, (1999), pp. 51-60

P 627 True, Hans: On the Theory of Nonlinear Dynamics and its Applications in Vehicle Systems Dynamics, Vehicle System Dynamics, Swets & Zeitlinger Publishers, 31 (1999) ISSN 0042-3114 pp. 393-4211

P 628 Jensen, Nordstrøm Carsten; Golubitsky, Martin; True, Hans: Symmetry, eneric bifurcations, and mode interaction in nonlinear railway dynamics, International Journal of Bifurcation and Chaos, 9 (1999) (7) 1321-1331

P 657 True, Hans and Nielsen, Jacob Birkedal: On the Dynamics of steady curving of railway vehicles, Proceedings of the 6th Mini conference on Vehicle system dynamics, identification and anomalies, Budapest Nov. 9-11, 1998 Hungary, 73-81

P 658 True, Hans and Nielsen, Jacob Birkedal: Über die Kurvendynamik von Eisenbahnfahrzeugen, Tagungsband zur VDEI Fachtagung BahnBau 2000, Berlin 12-15 Sept. (2000), 226-231