Wolfgang Flür was the drummer during their most productive period, and he wrote a book about his time with the band:<p><a href="http://www.amazon.com/KRAFTWERK-WAS-ROBOT-Wolfgang-Fl%C3%BCr-ebook/dp/B006ZP83GC" rel="nofollow">http://www.amazon.com/KRAFTWERK-WAS-ROBOT-Wolfgang-Fl%C3%BCr...</a><p>It's an interesting read - he was involved with the invention of the electronic trigger for sequenced drums, but he didn't get credit on the patent - Florian and Ralf did, because they regarded the other band members as <i>employees</i>, not fellow artists.<p>There's a lesson there for people working at startups - be sure to get credit for your work.