Kikkas, Toivo. “Field Courts Martial, the Cheka and Penal Policy in the Estonian War of Independence in 1918–1920”. Eesti Sõjaajaloo Aastaraamat Estonian Yearbook of Military History, vol. 17, no. 11, Dec. 2021, pp. 133-80, https://doi.org/10.22601/SAA.2021.11.05.