Marabo
Germany
ZappaBy Joko, pp 4-5Zappa-Konzert in DüsseldorfBy Kalle King, pp 6-7
There are article about Frank Zappa sub-titled "underground or commercial" and Philipshalle, Düsseldorf, February 1, 1978, concert review.
Source: slime.oofytv.set
Zappa – nein dankeBy Christoph Biermann & Peter Temminghoff, pp 6-9
FZ nein danke – immer nochBy Christoph Biermann, p 43