Stichting Mathematisch Centrum
Stichting Mathematisch Centrum. Numerieke Wiskunde

Beentjes, P. A. (1976). The solution of the order equations of a four-point, fourth order, two-step runge-kutta method : 2nd ed. In Stichting Mathematisch Centrum. Numerieke Wiskunde ( NW 28/76/re). Stichting Mathematisch Centrum.