<em>Sonderegger, Christof: West-Berlin, Europa-Center am Breitscheidplatz, 11.09.1976 (Com_L24-0484-0001-0002, <a href="http://doi.org/10.3932/ethz-a-001026093">http://doi.org/10.3932/ethz-a-001026093</a>)
<em>Sonderegger, Christof: West-Berlin, Europa-Center am Breitscheidplatz, 11.09.1976 (Com_L24-0484-0001-0002, <a href="http://doi.org/10.3932/ethz-a-001026093">http://doi.org/10.3932/ethz-a-001026093</a>)
