3Eric von Hippel, Cooperation Between Rivals: Informal Know- How Trading, Research Policy, 1987, 16(6) : 291 - 302.
4Eric von Hippel, "Sticky Information" and the Locus of Problem Solving: Implications for Innovation, Management Science, 1994,40(4) : 429 - 439.
5Eric von Hippel, J Churchill, M Sonnack, Breakthrough Products and Services with lead User Research, Cambridge, Mass.Minneapolis, Minn. : lead User Concepts, Inc., 1998.
6Eric von Hippel, Stefan Thomke and Mary Sonnack, Creating Breakthroughs at 3M, Health Forum Journal, 2000, 43(4): 20-26.
7Eric von Hippel, New Product Ideas from "lead Users" , Research Technology Management, 1989, 32(3): 24- 27.
8Eric von Hippel, Economics of Product Development by Users: The Impact of "Sticky" Local Information, Management Science,1998, 44(5) : 629 - 644.
9Stefan Thomke and Eric von Hippel, Customers as Innovators: A New Way to Create Value, Harvard Business Review, April 2002, 74- 80.
10Pamela D Morrison, John H Roberts, Eric von Hippel, Determinants of User Innovation and Innovation Sharing in a Local Market, Management Science, 2000, 46(12): 1513 - 1527.