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Tobin's q, economic rents, and the optimal stock of capital
Kopcke, Richard W., (1992)
Kopcke, Richard W., (1994)
Valuation, investment and the pure profit share
Lafourcade, Pierre, (2004)
Pollution Abatement as a Barrier to Entry.
Helland, Eric, (2003)
Pollution Abatement as a Barrier to Entry
The waiver pork barrel : committee membership and the approcal time of Medicaid waivers
Helland, Eric, (1999)