1. Variation of Razumikhin’s method for retarded functional equations;Bernfeld,1977
2. Comportement asymptotique des solutions de equation ẋ(t)=−f(t,x(t))+f(t,x(t−1))+h(t);Jehu;Ann. Soc. Sci. Bruxelles S. I,1978
3. On the convergence of solutions of functional-differential equations;Krisztin;Acta Sci. Math. (Szeged),1981
4. About the behavior at infinity of solutions ẋ(t)=f(t−1,x(t−1))−f(t,x(t));Arino;J. Math. Anal. Appl.,1983
5. Convergence of solutions of a nonlinear integro-differential equation arising in compartmental systems;Krisztin;Acta Sci. Math. (Szeged),1984