(EN) Grzegorz Rossoliński-Liebe, Debating, obfuscating and disciplining the Holocaust: post-Soviet historical discourses on the OUN–UPA and other nationalist movements (abstract), in East European Jewish Affairs, vol. 42, n. 3, Routledge, 2012, p. 202, DOI:10.1080/13501674.2012.730732, ISSN 1350-1674 (WC · ACNP).
«The OUN-B leadership adopted a number of fascist principles, including […] the red-and-black flag, which symbolised blood and earth (Blut und Boden)»