References
- Lemmert , R. 1989 . The shooting method for some nonlinear Sturm- Liouville boundary value problems . J. of Applied Mathematics and Physics , 40 : 769 – 773 .
- Walter , W. 1953 . Gewöhnliche Differentialgleichungen , Vol. 6. , New York : Aufl. Springer Verlag . Heidelberg 1996. English translation: Ordinary Differential Equa tions, Graduate Text in Mathematics 182, Springer Verlag, 1998