1. [1] E. Andronikof and T. Monteiro Fernandes, On the tempered solutions of regular systems, $D$-Modules and Microlocal Geometry (Lisbon, 1990), de Gruyter, Berlin, 1993, pp. 107–124.
2. [2] J.-M. Bony and P. Schapira, Solutions hyperfonctions du problème de Cauchy, Hyperfunctions and Pseudo-differential Equations (Proc. Conf., Katata, 1971), Lecture Notes in Math., vol. 287, Springer-Verlag, Berlin, 1973, pp. 82–98.
3. [3] J.-L. Brylinski, B. Malgrange, and J.-L. Verdier, Transformation de Fourier géométrique. II, C. R. Acad. Sci. Paris Sér. I Math. 303 (1986), no. 5, 193–198.
4. [4] T. Monteiro Fernandes, Formulation des valeurs au bord pour les systèmes reguliers, Compositio Math. 81 (1992), no. 2, 121–142.
5. [5] T. Monteiro Fernandes, Holmgren theorem and boundary values for regular systems, C. R. Acad. Sci. Paris Sér. I Math. 318 (1994), no. 10, 913–918.