E. Brun, Understanding and Managing Ambiguity in New Product Development: Lessons from the Medical-Device Industry, in Department of Industrial Economics and Technology Management, 2010.

S. Brown and K. Eisenhardt, Product Development: Past Research, Present Findings, and Future Directions, Academy of Management Review, vol.20, issue.2, pp.343-378, 1995.
DOI : 10.2307/258850

R. G. Cooper, Predevelopment activities determine new product success. Industrial Marketing Management, pp.237-247, 1988.
DOI : 10.1016/0019-8501(88)90007-7

A. Khurana and S. R. Rosenthal, Integrating the Fuzzy Front End of New Product Development, Sloan Management Review, vol.38, issue.2, pp.103-120, 1997.

R. Verganti, Leveraging on systematic learning to manage the early phases of product innovation projects. R&D Management, pp.377-392, 1997.

A. Khurana, S. R. Rosenthal, and T. Holistic, Towards holistic ???front ends??? in new product development, Journal of Product Innovation Management, vol.15, issue.1, pp.57-74, 1998.
DOI : 10.1016/S0737-6782(97)00066-0

P. Koen, Providing clarity and a common language to the 'Fuzzy Front End'. Research-Technology Management, pp.46-55, 2001.

R. K. Moenaert, R&D/marketing communication during the fuzzy front-end, IEEE Transactions on Engineering Management, vol.42, issue.3, pp.243-258, 1995.
DOI : 10.1109/17.403743

S. Reid and U. De-brentani, The Fuzzy Front End of New Product Development for Discontinuous Innovations: A Theoretical Model, Journal of Product Innovation Management, vol.21, issue.3, pp.170-184, 2004.
DOI : 10.1111/j.0737-6782.2004.00068.x

M. M. Montoya-weiss and T. M. , From experience: applying performance support technology in the fuzzy front end, Journal of Product Innovation Management, vol.17, issue.2, pp.143-161, 2000.
DOI : 10.1016/S0737-6782(99)00032-6

D. G. Reinertsen, R. G. Cooper, and E. J. Kleinschmidt, Taking the Fuzziness Out of the Fuzzy Front End Benchmarking the Firm's Critical Success Factors in New Product Development, Research Technology Management Journal of Product Innovation Management, vol.42, issue.125, pp.25-37, 1995.

G. L. Urban, J. R. Hauser-cooper, and R. G. , Design and Marketing of New Products Fixing the fuzzy front end of the new product process. CMA Magazine): p. 21. 15. Nobelius, D. and L. Trygg, Stop chasing the Front End process --management of the early phases in product development projects, International Journal of Project Management, vol.14, issue.85, pp.71-91, 1997.

Q. Zhang and W. Doll, The fuzzy front end and success of new product development: a causal model, European Journal of Innovation Management, vol.4, issue.2, pp.95-112, 2001.
DOI : 10.1016/S0737-6782(97)00029-5

J. Kim and D. Wilemon, Focusing the fuzzy front-end in new product development, R and D Management, vol.32, issue.4, pp.269-279, 2002.
DOI : 10.1111/1467-9310.00259

R. L. Daft and R. H. Lengel, Information richness: A new approach to managerial behavior and organizational design, pp.191-233, 1984.

K. E. Weick, The Social Psychology of Organizing

R. L. Daft and R. H. Lengel, Organizational Information Requirements, Media Richness and Structural Design, Management Science, vol.32, issue.5, pp.554-571, 1977.
DOI : 10.1287/mnsc.32.5.554

K. E. Weick, H. A. Simon, and J. G. , Sensemaking in Organizations A Primer on Decision Making: How Decisions Happen, 1994.

E. Eisenberg, Ambiguity as strategy in organizational communication, Communication Monographs, vol.60, issue.3, pp.227-242, 1921.
DOI : 10.1080/03637758409390197

D. Dougherty, Interpretive Barriers to Successful Product Innovation in Large Firms. Organization Science, pp.179-202, 1992.

M. Polanyi, The Tacit Dimension NY: Doubleday. 29. Nonaka, I., A dynamic theory of organizational knowledge creation. Organization Science, pp.14-37, 1967.

D. Leonard, Wellsprings of Knowledge: Building and Sustaining the Sources of Innovation, 1995.

D. Leonard and S. Sensiper, The Role of Tacit Knowledge in Group Innovation, California Management Review, vol.7, issue.3, pp.112-132, 1998.
DOI : 10.1037/h0040373

K. M. Eisenhardt and B. Tabrizi, Accelerating Adaptive Processes: Product Innovation in the Global Computer Industry, Administrative Science Quarterly, vol.40, issue.1, pp.84-110, 1995.
DOI : 10.2307/2393701

D. Føllesdal, Hermeneutics and the Hypothetical-Deductive Method, in Readings in the Philosophy of Social Science, pp.233-245, 1994.

E. Brun and A. S. Saetre, AMBIGUITY REDUCTION IN NEW PRODUCT DEVELOPMENT PROJECTS, International Journal of Innovation Management, vol.42, issue.04, pp.573-596, 2008.
DOI : 10.1002/smj.555

K. R. Popper, The Logic of Scientific Discovery, 1959.

D. Dougherty, Systems of organizational sensemaking for sustained product innovation, Journal of Engineering and Technology Management, vol.17, issue.3-4, pp.3-4, 2000.
DOI : 10.1016/S0923-4748(00)00028-X

I. Nonaka and H. Takeuchi, The knowledge-creating company: How Japanese companies create the dynamics of innovation, Long Range Planning, vol.29, issue.4, pp.303-319, 1995.
DOI : 10.1016/0024-6301(96)81509-3

E. Brun, A. S. Saetre, and M. Gjelsvik, Classification of ambiguity in new product development projects, European Journal of Innovation Management, vol.12, issue.1, pp.62-85, 2009.
DOI : 10.1108/14601060110390602