1. A. Bellen, N. Guglielmi and M. Zennaro, Numerical stability of nonlinear delay differential equations of neutral type, J. Comput. Appl. Math., 2000,125,251-263.
2. A. Bellen and M. Zennaro, Numerical Methods for Delay Differential Equations, Oxford University Press, Oxford, 2003.
3. J. W. Brown and R. V. Churchill, Complex Variables and Applications, McGrawHill Companies, Inc. and China Machine Press, Beijing, 2004.
4. H. Brunner and P. J. Van der Houwen, The numerical solution of Volterra equations. vol. 3 of CWI Monographs, North-Holland, Amsterdam, The Netherlands, 1986.
5. H. Brunner, The numerical solution of neutral Volterra integro-differential equations with delay arguments, Ann. Numer. Math, 1994, 1,309-322.