https://www.dlr.de/en/eoc/about-us/earth-observation-center-eoc/eoc-blogs/blog-happy-birthday-dfd-imf-eoc/part-2-4-cornerstones-of-the-first-two-decades/erhard-diedrich-und-robert-metzig-bei-einer-inspektion-im-november-2016
Erhard Diedrich and Robert Metzig during an inspection in November 2016
an inspectionerharddiedrichrobertmetzig
https://commons.wikimedia.org/wiki/Category:Unter_der_Metzig_11_(Ulm)
Category:Unter der Metzig 11 (Ulm) - Wikimedia Commons
categoryunterdermetzig11