^Jozo Tomasevich. "The Chetniks". War and Revolution in Yugoslavia. Stanford University Press, 1975. Pp. 103. "The condominium in Croatia was the most important example of Italo-German collaboration in controlling and despoiling an occupied area [...]".
^Stephen R. Graubard, (ed.).Exit from Communism. Transaction Publishers, 1993. Pp. 153-154. "After the Axis attack on Yugoslavia in 1941, Mussolini and Hitler installed the Ustašas in power in Zagreb, making them the nucleus of a dependent regime of the newly created Independent State of Croatia, an Italo-German condominium predicated on the abolition of Yugoslavia." 
^Günay Göksu Özdoğan, Kemâli Saybaşılı. Balkans: a mirror of the new international order. Marmara Üniversitesi. Dept. of International Relations, 1995. Pp. 143. "Croatia (with Bosnia-Hercegovina) formally became a new Axis ally - the Independent State of Croatia (NDH). This was in fact, Italo-German condominium, [...]".
^John R. Lampe (ed.), Mark Mazower (ed.). Ideologies and National Identities: The Case of Twentieth-Century Southeastern Europe. Central European University Press, 2003. Pp. 103. "[...] the Independent State of Croatia (hereafter NDH, Nezavisna Drzava Hrvatska), in reality an Italo-German condominium[...]"