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Wiesbaden: Dt. Univ.-Verl. [u.a.], 1997
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Aachen: Shaker, 2000
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[Evanston, IL]: [Northwestern University, Weinberg College of Arts & Sciences, Center for the Study of Industrial Organization], [2020]
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Evanston, IL: Northwestern University, Center for the Study of Industrial Organization (CSIO), 2020
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Cambridge, Mass: National Bureau of Economic Research, 2021