@book{Kennedy1991,
  author = {Kennedy, Paul},
  title = {Aufstieg und Fall der großen Mächte. Ökonomischer Wandel und militärischer Konflikt von 1500 bis 2000},
  publisher = {Fischer-Verlag},
  year = {1991},
  note = {erschien zuerst 1987 in den USA unter dem Titel "`The Rise and Fall of the Great Powers. Economic Change and Military Conflict from 1500 to 2000"'}
}

@book{Czempiel1989,
  author = {Czempiel, Ernst-Otto and Rosenau, James N.},
  title = {Global Changes and Theoretical Challanges. Approaches to World Politics for the 1990s},
  publisher = {Lexington Books},
  year = {1989}
}