Der Plan
About/Subject 4
 | Zigzag (No.100 April 1980) | Magazine |
 | Sounds November 11/81 | Magazine |
 | Electronic Sound #30 | Magazine |
 | Future Days: Krautrock and the Building of Modern Germany | Paperback |
Interview with/Interviewee 1
 | Eurock #19 | Zine |
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