Tam Chi Sang. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2003. / Includes bibliographical references (leaves 73-76). / Abstracts in English and Chinese. / Chapter 1 --- Introduction --- p.p.1 / Chapter 1.1 --- Review of Literature --- p.p.4 / Chapter 1.2 --- Relationships to the existing works --- p.p.11 / Chapter 2 --- Demand Functions --- p.p.20 / Chapter 3 --- Exogenous Timing Duopoly --- p.p.24 / Chapter 3.1 --- Description of the game --- p.p.24 / Chapter 3.2 --- Equilibrium Analysis --- p.p.27 / Chapter 4 --- Endogenous Timing Duopoly --- p.p.38 / Chapter 4.1 --- Description of the game --- p.p.38 / Chapter 4.2 --- Equilibrium Analysis --- p.p.41 / Chapter 5 --- Concluding Remarks --- p.p.52 / Chapter 6 --- Appendix --- p.p.56 / Chapter 6.1 --- Reaction functions in the Exogenous Timing Model --- p.p.56 / Chapter 6.2 --- Reaction functions in the Endogenous Timing Model --- p.p.62 / Chapter 6.3 --- Proofs for Inequalities (10)，(13)，and Proposition 1 --- p.p.66 / Chapter 6.4 --- "Proofs for Inequalities (22), (23), (26), (27), and Proposition 2" --- p.p.67 / Chapter 6.4.1 --- Proofs for Inequalities (22) and (23) with γ >0 --- p.p.67 / Chapter 6.4.2 --- Proofs for Inequalities (26) and (27) with γ <0 --- p.p.70 / Chapter 6.4.3 --- Proof for Proposition 2 --- p.p.72 / References --- p.p.73