4Kenneth G. Elzinga, David E. Mills, 1999:"Price wars triggered by entry", Intemational Journal of Industrial Organization 17:179 - 198.
5Louis A. Thomas, 1999, "Incumbent firms' response to entry: price, advertising and new product introduction", International Journal of Industrial Organization 17:527 - 555.
6Chaim Freshtman and Arirl Pakes, 2000: "A Dynamic Oligopoly with Collusion and Price Wars", working papers.