[eng] The two topics of the paper — contestability and predatory pricing — have in common that they have been used against antitrust policies.. After a short discussion of barriers to entry, the paper examines the special case of « ultra-free entry », which is the case of contestable...

[fre] Mainstream industrial organization and « new » schools . . Depuis 1970, trois écoles relevant de la « Nouvelle théorie de l'organisation industrielle » ont vu le jour :. - l'analyse néo-Chicago UCLA, qui met l'accent sur l'hypothèse de « structureefficace » ;. - la théorie des...

Talk delivered October 9, 1964 at the TIMS-ORSA meeting in Minneapolis.