Diffusion of an innovation is often influenced by the development of a complementary product , this is particularly important in communication industries where the sales of hardware products depend on the available compatible software. A model of diffusion of such a product is built on four submodels, and tested on an observation of the sales of CD players.
LE NAGARD, E. and STEYER, A. (1995). Diffusion of Innovation of Complementary Products : An Empirical Approach.