1. K.A. Abell, C.E. Elmer, A.R. Humphries, E.S. Van Vleck, Computation of mixed type functional differential boundary value problems, Research Report no CMAIA01-10, Centre for Mathematical Analysis and its Applications, University of Sussex, UK, 2001
2. Methods for numerical computation of characteristic roots for delay differential equations: experimental comparison;Breda;Sci. Math. Jpn.,2002
3. D. Breda, The infinitesimal generator approach for the computation of characteristic roots for delay differential equations using BDF methods, Research Report RR17/2002, Department of Mathematics and Computer Science, Università di Udine, Italy, 2002
4. D. Breda, Collection of numerical tests on the computation of characteristic roots for delay differential equations, Research Report RR2/2002, Department of Mathematics and Computer Science, Università di Udine, Italy, 2002
5. Computing the characteristic roots for delay differential equations;Breda;IMA J. Numer. Anal.,2004