- Notions of Convexity (Modern Birkhäuser Classics)
- Prospects in Mathematics. (AM-70) (Annals of Mathematics Studies)
- Linear Partial Differential Operators. (Grundlehren der mathematischen Wissenschaften)
- Introduction to Complex Analysis in Several Variables (Mathematical Library, Vol 7)
- The Analysis of Linear Partial Differential Operators I: Distribution Theory and Fourier Analysis (Classics in Mathematics)