[1]
|
P. P. F. Lazarsfeld, B. Berelson and H. Gaudet, “Wahlen und W?hler,” Luchterhand, Neuwied, 1969.
|
[2]
|
E. von Hippel, “The Sources of Innovation (The Executive Bookshelf from the Sloan Management Review),” Oxford University Press, Oxford, 1988.
|
[3]
|
E. von Hippel, “Lead Users: A source of Novel Product Concepts,” Management Science, Vol. 32, No. 7, 1986. pp. 791-805. doi:10.1287/mnsc.32.7.791
|
[4]
|
I. Eisenberg, “Lead-User Research for Breakthrough Innovation,” Research Technology Management, Vol. 54, No. 1, 2011. pp. 50-58.
|
[5]
|
W. R. Darden and F. D. Reynolds, “Predicting opinion leadership for men’s apparel fashions,” Journal of Market Research, Vol. 9, No. 3, 1972, pp. 324-328.
doi:10.2307/3149547
|
[6]
|
F. M. Belz and W. Baumbach, “Netnography as a Method of Lead User Identification,” Creativity and Innovation Management, Vol. 19, No. 3, 2010, pp. 304-313.
doi:10.1111/j.1467-8691.2010.00571.x
|
[7]
|
V. Bilgram, A. Brem, K.-I. Voigt, “User-Centric Innovations in New Product Development—Systematic Identification of Lead Users Harnessing Interactive and Collaborative Online-Tools,” International Journal of Innovation Management, Vol. 12, No. 3, 2008, pp. 419-458.
doi:10.1142/S1363919608002096
|
[8]
|
S. Hill, F. Provost and C. Vollinsky, “Network-Based Marketing: Identifying Likely Adopters via Consumer Networks,” Statistical Science, Vol. 21, No. 2, 2006, pp. 256-276. doi:10.1214/088342306000000222
|
[9]
|
J. Kratzer and C. Lettl, “Distinctive Roles of Lead Users and Opinion Leaders in the Social Networks of School- children,” Journal of Consumer Research, Vol. 36, No. 4, 2009, pp. 646-659. doi:10.1086/599324
|
[10]
|
P. D. Morrison, J. H. Roberts and D. F. Midgley, “Opinion Leadership Amongst Leading Edge Users,” Austra- lasian Marketing Journal, Vol. 8, No. 1, 2000, pp. 5-14.
doi:10.1016/S1441-3582(00)70181-9
|
[11]
|
M. Spann, H. Ernst, B. Skiera and J. H. Soll, “Identification of Lead Users for Consumer Products via Virtual Stock Markets,” Journal of Product Innovation Management, Vol. 26, No. 3, 2009, pp. 322-335.
doi:10.1111/j.1540-5885.2009.00661.x
|
[12]
|
S. Wasserman and K. Faust, “Social Network Analysis: Methods and Applications (Structural Analysis in the Social Sciences),” 1st Edition, Cambridge University Press, Cambridge, 1994. doi:10.1017/CBO9780511815478
|
[13]
|
L. C. Freeman, “Centrality in Social Networks Conceptual Clarification,” Social Networks, Vol. 1, No. 3, 1978. pp. 215-239. doi:10.1016/0378-8733(78)90021-7
|
[14]
|
M. Schenk, “Finanz-Meinungsführer,” Spiegel Verlag, 2005.
|
[15]
|
C. King and J. Summers, “Overlap of Opinion Leadership Across Consumer Product Categories,” Journal of Marketing Research, Vol. 7, No. 1, 1970, pp. 43-50.
doi:10.2307/3149505
|
[16]
|
G. Feder and S. Savastano, “The Role of Opinion Leaders in the Diffusion of New Knowledge: The Case of Integrated Pest Management,” Policy Research Working Paper Series, The World Bank, No. 3916, 2006.
|
[17]
|
C. Luthje and C. Herstatt, “The Lead User Method: An Outline of Empirical Findings and Issues for Future Research,” R&D Management, Vol. 34, No. 5, 2004, pp. 553-568.doi:10.1111/j.1467-9310.2004.00362.x
|
[18]
|
M. Schreier and R. Pruegl, “Extending Lead-User Theory: Antecedents and Consequences of Consumers’ Lead Userness,” The Journal of Product Innovation Management, Vol. 25, No. 4, 2008, pp. 331-346.
doi:10.1111/j.1540-5885.2008.00305.x
|
[19]
|
L. B. Jeppesen and K. Laursen, “The Role of Lead Users in Knowledge Sharing,” Research Policy, Vol. 38, No. 10, 2009, pp. 1582-1589. doi:10.1016/j.respol.2009.09.002
|
[20]
|
J. Coleman, E. Katz and H. Menzel, “The Diffusion of an Innovation among Physicians,” Sociometry, Vol. 20, No. 4, 1957, pp. 253-270. doi:10.2307/2785979
|
[21]
|
R. Merwe and G. V. Van Der Heerden, “Finding and Utilizing Opinion Leaders: Social Networks and the Power of Relationships,” South African Journal of Business Ma- nagement, Vol. 40, No. 3, 2009, pp. 65-77.
|
[22]
|
R. Iyengar, C. van den Bulte, J. Eichert, B. West and T. W. Valente, “How Social Networks and Opinion Leaders Affect the Adoption of New Products,” GfK Marketing Intelligence Review, Vol. 3, No. 1, 2011. pp. 16-26.
|
[23]
|
Y. Cho, J. Hwang and D. Lee, “Identification of Effective Opinion Leaders in the Diffusion of Technological Innovation: A Social Network Approach,” Technological Forecasting and Social Change, Vol. 79, No. 1, 2012. pp. 97-106. doi:10.1016/j.techfore.2011.06.003
|
[24]
|
R. A. Coulter, L. F. Feick and L. L. Price, “Changing Faces: Cosmetics Opinion Leadership among Women in the New Hungary,” European Journal of Marketing, Vol. 36, No. 11-12, 2002, pp. 1287-1308.
doi:10.1108/03090560210445182
|
[25]
|
W. Hoyer and J. Jacoby, “What if Opinion Leaders Didn’t know more? A question of Nomological Validity,” Ad- vances in Consumer Research, Vol. 8, 1955, pp. 299-303.
|
[26]
|
DESTATIS, Kostenstruktur bei Arzt- und Zahnarztpraxen, Praxen von psychologischen Psychotherapeuten Sowie Tierarztpraxen, Fachserie 2. Statistisches Bundesamt. 2009.
|
[27]
|
S. Bundesamt, “Einkommensteuer: Statistik 2004,” Deut- sches Tier?rzteblatt, Vol. 8, 2009, pp. 1036-1037.
|
[28]
|
V. C. Hommerich, “Controlling Ist Zwingend Geboten,” Deutsches IngenieurBlatt, No. 6, 2007, pp. 42-45.
|
[29]
|
S. P. P. Borgatti, L. Everett and C. Freeman, “UCINET 6 for Windows: Software for Social Network Analysis,” 2002.
|
[30]
|
R. E. Goldsmith and R. Desborde, “A Validity Study of a Measure of Opinion Leadershipp,” Journal of Business Research, Vol. 22, No. 1, 1991. pp. 11-19.
doi:10.1016/0148-2963(91)90010-U
|
[31]
|
G. Flodgren, E. Parmelli, G. Doumit, M. Gattellari, M. A. O’Brian, J. Grimshaw and M. Eccles, “Local Opinion Leaders: Effects on Professional Practice and Health Care Outcomes (Review),” The Cochrane Library, Vol. 8, 2011.
|
[32]
|
L. R. Flynn, R. E. Goldsmith and J. K. Eastman, “The King and Summers Opinion Leadership Scale: Revision and Refinement,” Journal of Business Research, Vol. 31, No. 1, 1994, pp. 55-64.
doi:10.1016/0148-2963(94)90046-9
|
[33]
|
J. S. Fenton and T. R. Leggett, “A New Way to Find Opinion Leaders,” Journal of Advertising Research, Vol. 11, No. 2, 1971, pp. 21-26.
|
[34]
|
C. Rodriguez Cano, F. A. Carillat and F. Jaramillo, “A Meta-Analysis of the Relationship between Market Ori- entation and Business Performance: Evidence from Five Continents,” International Journal of Research in Mar- keting, Vol. 21, No. 2, 2004, pp. 179-200.
doi:10.1016/j.ijresmar.2003.07.001
|
[35]
|
B. J. Jaworski and A. K. Kohli, “Market Orientation: An- tecedents and Consequence,” Journal of Marketing, Vol. 57, No. 3, 1993, p. 53. doi:10.2307/1251854
|
[36]
|
A. K. Kohli and B. J. Jaworski, “Market Orientation: The Construct, Research Propositions, and Managerial Impli- cations,” Journal of Marketing, Vol. 54, No. 2, 1990, pp. 1-18. doi:10.2307/1251866
|
[37]
|
J. C. Narver and S. F. Slater, “The Effect of a Market Orientation on Business Profitability,” Journal of Mar- keting, Vol. 54, No. 4, 1990, pp. 20-35.
doi:10.2307/1251757
|