Authors
Nees Jan van Eck
Centre for Science and Technology Studies, Leiden University, The Netherlands, Nanjing, China
Ludo Waltman
Centre for Science and Technology Studies, Leiden University, The Netherlands, Nanjing, China
© 2018 Nees Jan van Eck, Ludo Waltman, published by Chinese Academy of Sciences, National Science Library
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.