Numerical Methods for Ordinary Differential Equations : Proceedings of the Workshop held in LAquila (Italy) Sept. 16–18 1987 Developments in numerical initial value ode methods were the focal topic of the meeting at LAquila which explord the connections between the classical background and new research areas such as differental algebraic equations delay integral and integro differential equations stability properties continuous extensions (interpolants for Runge Kutta methods and their applications effective stepsize control parallel algorithms for small and large scale parallel architectures). The resulting proceedings address many of these topics in both research and survey papers