1. Research problems: Functional differential equations;Bellman;Bull. Am. Math. Soc.,1965
2. Asymptotic stability for functional differential equations;Yorke,1968
3. On the solutions of linear homogeneous differential equations of the first order and stable type with retarded arguments;Myškis;Matematicheski Sbornik,1951
4. Oscillatory solutions of the equation y′(x) = m(x)y(x − n(x));Lillo;Center for Dynamical Systems (Brown University) Technical Report 67-1,1967
5. Oscillatory solutions of the equation y′(x) = m(x)y(x − n(x))