The optimal location and time of entry are examined in a horizontally diffe
rentiated market using a simple duopoly model with sequential entry. Assumi
ng high entry and relocation costs, we find that (1) the late entrant alway
s locates in the periphery (maximum differentiation), (2) the first entrant
will choose either a peripheral location or a central location (minimum di
fferentiation) but not an intermediate location, (3) the choice of a centra
l location is optimal when the effectiveness of entry deterrence is enhance
d by low transportation costs, high interest rates, high fixed costs and a
low market growth rate. (C) 2001 Elsevier Science B.V. All rights reserved.