BPG is committed to discovery and dissemination of knowledge
Total Visits of This Article
2020 | Number of total visits
Rank Countries/Territories Count Percent
1 China 18 37.5%
2 United States 13 27.1%
3 Germany 10 20.8%
4 France 4 8.3%
5 Russia 2 4.2%
6 Ukraine 1 2.1%