<em>Comet Photo AG: Zürich, Sechseläuten, 1991 (Com_LC1000-020-001-007, <a href="http://doi.org/10.3932/ethz-a-000988788">http://doi.org/10.3932/ethz-a-000988788</a>)
<em>Comet Photo AG: Zürich, Sechseläuten, 1991 (Com_LC1000-020-001-007, <a href="http://doi.org/10.3932/ethz-a-000988788">http://doi.org/10.3932/ethz-a-000988788</a>)
