Klaus H. Goetz, Hellmut Wollmann, „Governmentalizing central executives in post-communist Europe: a four-country comparison“, „Journal of European Public Policy“, Vol. 8, Issue 6, 2001, p. 864-887, doi:10.1080/13501760110098260[1]Archyvuota kopija 2013-04-18 iš Wayback Machine projekto.
potsdamer-koepfe.de
Klaus H. Goetz, Hellmut Wollmann, „Governmentalizing central executives in post-communist Europe: a four-country comparison“, „Journal of European Public Policy“, Vol. 8, Issue 6, 2001, p. 864-887, doi:10.1080/13501760110098260[1]Archyvuota kopija 2013-04-18 iš Wayback Machine projekto.
web.archive.org
Klaus H. Goetz, Hellmut Wollmann, „Governmentalizing central executives in post-communist Europe: a four-country comparison“, „Journal of European Public Policy“, Vol. 8, Issue 6, 2001, p. 864-887, doi:10.1080/13501760110098260[1]Archyvuota kopija 2013-04-18 iš Wayback Machine projekto.