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Wettbewerb statt Privatisierung: Auslandserfahrung für die deutsche Entwicklung
Loheide, Johannes, (2000)
The decision to contract out city services : a further explanation
Morgan, David R., (1988)
Contracting for government services : theory and evidence from US cities
Levin, Jonathan, (2010)
The public spending and employment effects of local service contracting
Ferris, James M., (1988)
Demands for public spending : an attitudinal approach
Ferris, James M., (1983)
Interrelationships among public spending preferences : a micro analysis
Ferris, James M., (1985)