1. C.T.H. Baker and C.A.H. Paul, A global convergence theorem for a class of PCRK methods and vanishing lag DDEs, Technical Report No. 229, University of Manchester (1993).
2. A. Bellen and M. Zennaro, Numerical solution of delay differential equations by uniform corrections to an implicit Runge-Kutta method, Numer. Math. 47(1985)301–316.
3. J.C. Butcher,The Numerical Analysis of Ordinary Differential Equations (Wiley, Chichester, UK, 1987).
4. J.R. Dormand and P.J. Prince, A family of embedded Runge-Kutta formulae, J. Comp. Appl. Math. 6(1980)19–26.
5. L.E. El'sgol'ts and S.B. Norkin,Introduction to the Theory and Application of Differential Equations with Deviating Arguments (Academic Press, New York, 1973).