Research Article
Knowledge Framework and Evolution of Fuzzy Portfolio Research: A Bibliometric Analysis
Table 7
Top 20 most productive countries.
| Country | Frequency | Centrality | Year |
| The People’s Republic of China | 199 | 0.32 | 2002 | Iran | 79 | 0.26 | 2008 | Spain | 53 | 0.43 | 2001 | Taiwan | 46 | 0.08 | 2004 | India | 43 | 0.05 | 2008 | United States | 42 | 0.31 | 1996 | Japan | 36 | 0.06 | 1998 | Turkey | 22 | 0.01 | 2005 | Australia | 19 | 0.04 | 2005 | Canada | 17 | 0.22 | 2000 | Romania | 16 | 0.02 | 1999 | England | 15 | 0.12 | 2002 | Germany | 15 | 0.02 | 1999 | Brazil | 14 | 0.00 | 2012 | France | 12 | 0.10 | 2009 | Italy | 11 | 0.11 | 2006 | Mexico | 11 | 0.00 | 2002 | Lithuania | 10 | 0.01 | 2012 | Poland | 9 | 0.01 | 2012 | Finland | 8 | 0.01 | 2009 |
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