1. Alter M., (1989), “The UK Retail Technology Market: Applications, Benefits and Future Developments in EPoS/EFTPoS Systems and Software”, Business International, London.
2. Anderson E. and Coughlan A.T., (1987), “International Market Entry and Expansion via Independent or Integrated Channels of Distributions”, Journal of Marketing, 51(1), 71–82.
3. Areeda P. and Kaplow L., (1988), Antitrust Analysis: Problems, Text, Cases, Little, Brown and Company, Boston.
4. Arrow K.J., (1975), “Vertical Integration and Communication”, Bell Journal of Economics, 6, 173–183.
5. Asanuba B. and Kikutani T., (1992), “Risk Absorption in Japanese Subcontracting: A Microeconometric Study of the Automobile Industry”, Journal of the Japanese and International Economies 6, 1–29.