1. Butcher, J.C.: A stability property of implicit Runge-Kutta methods. Nordisk Tidskr. Informationsbehandling (BIT)15, 358?361 (1975)
2. Butcher, J.C.: Implicit Runge-Kutta processes. Math. Comput.18, 50?64 (1964)
3. Chipman, F.H.: A-stable Runge-Kutta processes. Nordisk Tidskr. Informationsbehandling (BIT)11, 384?388 (1971)
4. Crouzeix, M.: Sur l'approximation des equations differentielles opérationnelles linéaires par des méthodes de Runge-Kutta. Thèse, Paris, 1975
5. Ehle, B.L.: On pade approximation to the exponential function andA-stable methods for the numerical solution of initial value problems. Research Report CSRR 2010, Dept. AACS, University of Waterloo, 1969