1. Hjalager, A.M., Huijbens, E.H., Björk, P., Nordin, S., Flagestad, A., and Knutsson, O. (2008). Innovation Systems in Nordic tourism. NORDEN, Nordic Inovation Centre, Oslo, Norway.
2. Komppula, R. (2001). New-product development in tourism companies – case studies on nature-based activity operators. Paper presented at The 10th Nordic Tourism Research Symposium, October 18–20, Vasa, Finland.
3. The promise of entrepreneurship as a Field of research;Shane;Academy of Management Review,2000
4. Selecting Methodologies for entrepreneurial research: tradeoffs and guidelines;Smith;Entrepreneurship: Theory & Practice,1989
5. The distinctive domain of entrepreneurship research: An editors perspective;Venkataraman,1997