Stichting Mathematisch Centrum
Stichting Mathematisch Centrum. Toegepaste Wiskunde

Diekmann, O.& Montijn, R. (1981). Prelude to hopf bifurcation in an epidemic model: analysis of a characteristic equation associated with a nonlinear volterra integral equation : (preprint). In Stichting Mathematisch Centrum. Toegepaste Wiskunde (TW 215/81). Stichting Mathematisch Centrum.