Leydesdorff, Loet; Wagner, Caroline S. - In: Journal of Informetrics 2 (2008) 4, pp. 317-325
International collaboration as measured by co-authorship relations on refereed papers grew linearly from 1990 to 2005 in terms of the number of papers, but exponentially in terms of the number of international addresses. This confirms Persson et al.'s [Persson, O., Glänzel, W., & Danell, R....