1. Periodic dissipative processes;Billotti;Bull. Amer. Math. Soc.,1971
2. α-Condensing Maps and Dissipative Systems;Cooperman,1978
3. α-contractions and differential equations;Hale,1975
4. Functional differential equations with infinite delay;Hale;J. Math. Anal. Appl.,1974
5. Theory of Functional Differential Equations;Hale,1977