International collaboration in science and the formation of a core group

Journal of Informetrics - Tập 2 - Trang 317-325 - 2008
Loet Leydesdorff1, Caroline S. Wagner2
1University of Amsterdam, Amsterdam School of Communications Research (ASCoR), Kloveniersburgwel 48, 1012 CX Amsterdam, The Netherlands
2SRI International, Arlington, VA 22209, USA

Tài liệu tham khảo

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