BUTKUS, Zenonas. The Impact of German and Soviet Politics towards the Establishment ofthe Baltic Union in 1919-1940. Lietuvos istorijos studijos, [S. l.], v. 20, p. 21–41, 2007. DOI: 10.15388/LIS.2007.20.2. Disponível em: https://test.zurnalai.vu.lt/lietuvos-istorijos-studijos/article/view/43348. Acesso em: 30 oct. 2025.