REFERENCES

Cravens, D. W. ( 1987). Strategic Marketing. Homewood, IL: Richard D. Irwin.

Kotler, P. ( 1991). Marketing Management: Analysis, Planning, Implementation and Control (7^th ed.) Englewood Cliffs, NJ: Prentice Hall.

Rajala, R., Rossi, M., Tuunainen, V. K., & Korri, S. ( 2001). Software business Models, A framework for Analyzing Software Industry: 76. Helsinki: TEKES.

Statistics Finland ( 2002). http://www.stat.fi/tk/tp/tasku/taskue_yritykset.html.