As part of the focus on estimating the links between regional economie
s and the global economy through international trade, the authors have
examined some of the recent strategies. These approaches and extensio
ns of a prior model are of great value, and in this vein, we support t
hese approaches. As a complement to the Noponen, Markusen, and Driesse
n (1997) Economic Development Quarterly article, we have suggested som
e essential but minor modifications.