It was published in English under the title, The Yugoslav Auschwitz and the Vatican: The Croatian Massacre of the Serbs During World War II by Prometheus Books, in 1992 (ISBN 978-0879757526).
Described as a polemical work, without the usual support of bibliography and footnotes, this history explores the genocide in Croatia beginning in 1941 under the authority of Ante Pavelić, and conducted by secular Ustasha and Catholic religious figures, including clergy.
Among the atrocities described is the massacre of prisoners at Jasenovac concentration camp, in which an estimated 750,000 Orthodox Serbs were killed.
[1] This text was also published in German as Jasenovac, das jugoslawische Auschwitz und der Vatikan, by Ahriman-Verlag GmbH (January 31, 2001).
He documents the repression and genocide in Yugoslavia during the war of Orthodox Christian Serbs by Catholics in Croatia, with the support of high-level Vatican officials.