L. LeydesdorffDepartment of Science and Technology Dynamics Nieuwe Achtergracht 166 1018 WV Amterdam (The Netherlands) Nieuwe Achtergracht 166 1018 WV Amterdam (The Netherlands)
P. WoutersDepartment of Science and Technology Dynamics Nieuwe Achtergracht 166 1018 WV Amterdam (The Netherlands) Nieuwe Achtergracht 166 1018 WV Amterdam (The Netherlands)