RT Journal Article SR 00 A1 Hart, Olivier A1 Tirole, Jean T1 Vertical Integration and Market Foreclosure JF Brookings Papers on Economic Activity YR 1990 FD 1990 VO 1990 SP 205 OP 286 PB Brookings Institution LK https://publications.ut-capitole.fr/id/eprint/1110/ UL http://tse-fr.eu/pub/4145