found: Dolfsma, Wilfred. Valuing pop music, c1999:t.p. (Wilfred Dolfsma)
found: Institutional economics and the formation of preferences, 2004:CIP t.p. (Wilfed Dolfsma) CIP data sheet (b. 06/10/70)
found: Aalbers, Rick. Innovation networks, 2015:title page (Wilfred Dolfsma) back cover (Professor of Strategy and Innovation at the University of Groningen, the Netherlands)
found: University of Groningen website, October 13, 2015(Expertise of Prof. Wilfred Dolfsma: innovation, cooperation, appropriability, knowledge transfer, technological change)