Gatignon, Hubert; Eliashberg, Jehoshua; Robertson, Thomas S. - In: Marketing Science 8 (1989) 3, pp. 231-247
The objective of this study is to develop an econometric model for the diffusion of innovations at the individual country level, but which also allows the parameters of the process to differ systematically across countries. The conceptualization rests on behavioral and spatial theories of...