1. V. E. Shamanskii, Numerical Methods for Solving Boundary Value Problems on Computer (Naukova Dumka, Kiev, 1963), part 1 [in Russian].
2. R. E. Bellman and R. E. Kalaba, Quasilinearization and Nonlinear Boundary-Value Problems (American Elsevier, New York, 1965; Mir, Moscow, 1968).
3. H. B. Keller, Numerical Methods for Two-Point Boundary-Value Problems (Walthan, Blaisdell, 1968).
4. S. M. Roberts and J. S. Shipman, Two-Point Boundary-Value Problems: Shooting Methods (Elsevier, New York, 1972).
5. N. S. Bakhvalov, Numerical Methods: Analysis, Algebra, Ordinary Differential Equations (Fizmatgiz, Moscow, 1973; Mir, Moscow, 1977).