//-->
The impact of the income tax on work effort and x-inefficiency in enterprises
Bohnet, Armin, (1988)
Productivity change in Chinese industry : 1953 - 1985 ; some further estimations
Beck, Martin, (1989)
X-Effizienz-Theorie : Darst., Kritik, Möglichkeiten d. Weiterentwicklung
Bohnet, Armin, (1986)