Mitchell, Peter, and Tanel Tatsi. “Examining the Indefensible: Guarding Estonia in the Interwar Period and the Future”. Eesti Sõjaajaloo Aastaraamat Estonian Yearbook of Military History, no. 13, Oct. 2025, pp. 153-70, https://doi.org/10.22601/SAA.2023.13.06.