1. Kurzweil, J., Generalized Ordinary Differential Equations and Continuous Dependence on a Parameter, Czechoslovak Math. J., 1957, vol. 7, no. 3, pp. 418–449.
2. Series in Real Analysis;Schwabik,1992
3. Schwabik, Š., Tvrdý, M., and Vejvoda, O., Differential and Integral Equations. Boundary Value Problems and Adjoints, Czechoslovak Academy of Sciences, Dordrecht-Boston-London, 1979.
4. Ashordia, M.T., On the Correctness of Linear Boundary Value Problems for Systems of Generalized Ordinary Differential Equations, Georgian Math. J., 1994, vol. 1, no. 2, pp. 343–351.
5. Ashordia, M., On the Stability of Solutions of the Multipoint Boundary Value Problem for the System of Generalized Ordinary Differential Equations, Mem. Differential Equations Math. Phys., 1995, vol. 6, pp. 1–57.