Publisher
Springer Science and Business Media LLC
Subject
Applied Mathematics,General Mathematics
Reference14 articles.
1. Levi, M., Qualitative analysis of the periodically forced relaxation oscillation, Ph. D. thesis, 1978, New York University.
2. Levinson, N., A Second order differential equation with singular solutions,Ann. Math.,50 (1949), 127–153.
3. Cartwright, M. L. & Littlewood, J. E., On non-linear differential equations of the second order: I.,J. London Math. Soc.,20 (1945), 180–189.
4. Littlewood, J. E., On nonlinear differential equations of the second order; III,Acta Math.,97 (1957), 267–308.
5. —, On nonlinear differential equations of the second order; IV,Acta Math.,98 (1957), 1–110.