%0 Journal Article
%T Using Market-Level Data to Understand Promotion Effects in a Nonlinear Model
%A Christen, Markus
%A Gupta, Sachin
%A Porter, John C.
%A Staelin, Richard
%A Wittink, Dick R.
%J Journal of Marketing Research
%V 34
%N 3
%P 322-334
%@ 0022-2437
%D 1997-08-01
%I SAGE Publications
%~ DeepDyve