1. Characteristic multipliers and stability of symmetric periodic solutions of ẋ(t) = g(x(t - 1));Chow;Trans. Amer. Math. Soc.,1988
2. Uniqueness and nonuniqueness for periodic solutions of x′(t) = −g(x(t − 1));Nussbaum;J. Differential Equations,1979
3. Homoclinic solutions and chaos in ẋ(t) = f(x(t - 1));Walther;Nonlinear Anal.,1981
4. Models of vertically transmitted diseases with sequential-continuous dynamics;Busenberg,1982
5. Retarded differential equations with piecewise constant delays;Cooke;J. Math. Anal. Appl.,1984