bifurcation
1991 / Introduction to bifurcation theory / John David Crawford / Reviews of Modern Physics 63 (1991) p. 991 [doi]
1992 / Stability and Hopf bifurcations in an inverted pendulum / James A. Blackburn ; H. J. T. Smith ; N. Grønbech-Jensen / American Journal of Physics 60 (1992) p. 903 [doi]
1998 / Physique non-linéaire et bifurcations / Vincent Bourges / Bulletin de l'Union des Physiciens 804 (1998) p. 849 [lien]