1. Abramov, S.A. and Barkatou, M., Computable infinite power series in the role of coefficients of linear differential systems, Proc. of CASC’2014, 2014, pp. 1–12.
2. Abramov, S.A. and Khmelnov, D.E., Regular solutions of linear differential systems with power series coefficients, Programming Comput. Software, 2014, vol. 40, no. 2, pp. 98–105.
3. Abramov, S.A., Barkatou, M., and Pflügel, E., Higherorder linear differential systems with truncated coefficients, Proc. of CASC’2011, 2011, pp. 10–24.
4. Barkatou, M., An algorithm to compute the exponential part of a formal fundamental matrix solution of a linear differential system, Applicable Algebra Eng. Commun. Computing, 1997, vol. 8, pp. 1–23.
5. Tournier, E., Solutions formelles d’équations différentielles. Le logiciel de calcul formel DESIR étude théorique et réalisation, Thése d’état, Université de Grenoble, 1987.