| title | ISBN-13 | year of publication | |
|---|---|---|---|
| Civil Defense | 978-99942-50-02-8 | 1984 | |
| PGP. Pretty Good Privacy | 978-3-9802182-7-6 | 1999 | |
| PGP. Pretty Good Privacy | 978-3-9802182-5-2 | 1997 | |
| Pretty good privacy 3.0 pre-alpha source code, preliminary release 1.1: Distributed at the December 14, 1996 Public Cyberpunks Meeting | 978-0-9649654-2-3 | 1996 |
P. Zimmermann · Philip R. Zimmermann · Philip Zimmerman · Philipp Zimmermann · Philippe Zimmern
Art d'Ameublement · Baen Books · Warthman Associates