| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| On Special Missions: The Luftwaffe's Research and Experimental Squadrons 1923 - 1945 | 978-1-9O3223-33-8 (1-9O3223-33-4) | 2003 | J. Richard Smith · E.J. Creek |
P.P. · Peter Petrick · Steven P. Petrick