Spectral Theory of Ordinary Differential Operators (Lecture Notes in Mathematics, 1258)
Continuous and Discrete Dynamics near Manifolds of Equilibria (Lecture Notes in Mathematics, 1058)
Equations Differentielles a Points Singuliers Reguliers (Lecture Notes in Mathematics, 163) (French Edition)
Local Theory of Nonlinear Analytic Ordinary Differential Equations (Lecture Notes in Mathematics, 702)
Almost Periodic Differential Equations (Lecture Notes in Mathematics, 377)
Coincidence Degree and Nonlinear Differential Equations (Lecture Notes in Mathematics, No.568) (Lecture Notes in Mathematics, 568)
Asymptotic Analysis II: Surveys and New Trends (Lecture Notes in Mathematics, 985)
Asymptotic Analysis for Integrable Connections with Irregular Singular Points (Lecture Notes in Mathematics, 1075)
Precise Spectral Asymptotics for Elliptic Operators Acting in Fiberings over Manifolds with Boundary (Lecture Notes in Mathematics, 1100)
Boundary Value Problems of Mathematical Physics and Related Aspects of Function Theory (Seminars in mathematics)