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Fascist Warfare, 1922–1945: Aggression, Occupation, Annihilation. Springer Nature, 253. o. (2019. november 26.). ISBN 978-3-03027-648-5 „Through ethnic cleansing, the Ustasha Corps and the irregular 'wild Ustashe' groups murdered over 100,000 Serbs in the countryside by the end of summer 1941. The pogroms of the 'wild Ustashe' were the main cause for the eruption of large-scale rebellion against the Ustasha regime.”
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