[1] Bogdanov, R. I.: Bifurcation of limit cycle of a family of plane vector fields. Sel. Math. Sov. 1 (1981), 373–387.
[5] Chow, S.-N., Hale, J. K.:
Methods of Bifurcation Theory. Springer, New York, 1996.
MR 0660633
[6] Chow, S.-N., Wang, D.:
On the monotonicity of the period function of some second order equations. Časopis Pěst. Mat. 111 (1986), 14–25.
MR 0833153
[8] Guckenheimer, J., Holmes, P. J.:
Nonlinear Oscillations, Dynamical Systems and Bifurcations of Vector Fields. Springer, New York, 1983.
MR 0709768
[9] Jarník, V.: Integral Calculus II. Academia, Praha, 1976. (Czech)
[12] Qiu, S.-L., Vamanamurthy, M. K.:
Sharp estimates for complete elliptic integrals. SIAM J. Math. Anal. 27 (1996), 823–834.
DOI 10.1137/0527044 |
MR 1382835
[13] Sanders, J. A., Cushman, R.:
Limit cycles in the Josephson equation. SIAM J. Math. Anal. 17 (1986), 495–511.
DOI 10.1137/0517039 |
MR 0838238
[14] Whittaker, E. T., Watson, G. N.:
A Course of Modern Analysis. Cambridge at the University Press, Cambridge, 1927.
MR 1424469
[15] Wiggins, S.:
Introduction to Applied Nonlinear Dynamical Systems and Chaos. Springer, New York, 1990.
MR 1056699 |
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