Kato G., Struppa D.C. Fundamentals of algebraic microlocal analysis

Marcel Dekker, 1999. — 308 p.
Provides a thorough introduction to the algebraic theory of systems of differential equations, as developed by the Japanese school of M. Sato and his colleagues. Features a complete review of hyperfunction-microfunction theory and the theory of D-modules. Strikes the perfect balance between analytic and algebraic aspects.