GCOS15-1: Helmholtz Roadmap 2015 (in German), see pg. 40
GCOS18-1: GCOS ideas presented at UHECR 2018
GCOS20-1: Letter of Interest for Snowmass 2021
GCOS21-1: slides GCOS workshop May 2021
GCOS21-2: Highlight talk at ICRC 2021
GCOS21-3: Helmholtz Roadmap 2021 (in German, see pg 31
GCOS22-1: UHECR White Paper (2022)
GCOS22-2: GCOS at ISVHECRI 2022
GCOS22-3: GCOS at ARENA 2022
GCOS22-4: GCOS at ECRS 2022
GCOS22-5: GCOS at UHECR 2022
GCOS22-6: slides GCOS workshop July 2022 Wuppertal
GCOS23-1: slides GCOS workshop June 2023 Brussels
