Mueller-Langer, Frank MPI for Intellectual Property and Competition Law, Max Planck Society;
http://ssrn.com/abstract=2045956 (Preprint)
Mueller-Langer, F., & Watt, R. (2012). Optimal Pricing and Quality of Academic Journals and the Ambiguous Welfare Effects of Forced Open Access: A Two-Sided Model. TILEC Discussion Paper, DP 2012-019.