The resources below are books, articles, and other media that are useful references for aspects of this topic. When they are complete, each reference will be described and tagged. See here for an example of a more or less complete entry.
Congressional Research Service. Authority to order the use of nuclear weapons (United States, United Kingdom, France, Soviet Union, People's Republic of China). Washington, DC: Congressional Research Service, 1975. https://catalog.hathitrust.org/Record/003216700/Home.
Lewis, Patricia, Heather Williams, Benoît Pelopidas and Sasan Aghlani. Too Close for Comfort: Cases of Near Nuclear Use and Options for Policy. London: Chatham House, 2014. https://www.chathamhouse.org/sites/default/files/field/field_document/20140428TooCloseforComfortNuclearUseLewisWilliamsPelopidasAghlani.pdf.