BPG is committed to discovery and dissemination of knowledge
Total Visits of This Article
2021 | Number of total visits
Rank Countries/Territories Count Percent
1 United States 43 63.2%
2 China 9 13.2%
3 Netherlands 4 5.9%
4 Taiwan 3 4.4%
5 Canada 3 4.4%
6 Germany 2 2.9%
7 Sweden 2 2.9%
8 Austria 1 1.5%
9 France 1 1.5%