Rettberg, Petra ; Antunes, André ; Brucato, John Robert...
https://elib.dlr.de/126590/1/ME-SBA-2019-Rettberg-Biological%20Contamination%20Prevention%20for%20Outer%20Solar%20System%20Moons%20of%20Astrobiological%20Interest%20-%20What%20Do%20We%20Need%20to%20Know.pdf.  , 2019