Space Deterrence: In Search of a "Magical Formula" - Kopeć, Rafał (Space Policy, 2019)
https://katalog.adlr.link/Record/ai-49-aHR0cDovL2R4LmRvaS5vcmcvMTAuMTAxNi9qLnNwYWNlcG9sLjIwMTguMTAuMDAz