Xavier Vives is Director of the Institut d'An lisi Econ mica, Barcelona.
"""An exceedingly careful and thorough treatment of the theoretical stock of knowledge on imperfect competition by one of the best oligopoly theorists of his generation....Its comprehensive coverage and attention to theoretical foundations and to proving results rigorously and with utmost generality means that scholars, not just students, will benefit from reading it."" - Joseph Harrington, Professor of Economics, Johns Hopkins University"