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Reference Citation Analysis
| Rank | Countries/Territories | Count | Percent |
| 1 | China | 579 | 18.5% |
| 2 | Italy | 350 | 11.2% |
| 3 | United States | 311 | 9.9% |
| 4 | India | 193 | 6.2% |
| 5 | Japan | 172 | 5.5% |
| 6 | Turkey | 145 | 4.6% |
| 7 | Egypt | 116 | 3.7% |
| 8 | South Korea | 110 | 3.5% |
| 9 | Taiwan | 83 | 2.7% |
| 10 | Greece | 73 | 2.3% |
| 11 | Iran | 72 | 2.3% |
| 12 | Brazil | 70 | 2.2% |
| 13 | Spain | 68 | 2.2% |
| 14 | United Kingdom | 53 | 1.7% |
| 15 | Romania | 52 | 1.7% |
| 16 | Germany | 39 | 1.2% |
| 17 | France | 39 | 1.2% |
| 18 | Saudi Arabia | 36 | 1.1% |
| 19 | Thailand | 33 | 1.1% |
| 20 | Australia | 32 | 1% |
| 21 | Mexico | 31 | 1% |
| 22 | Poland | 28 | 0.9% |
| 23 | Russia | 23 | 0.7% |
| 24 | Canada | 23 | 0.7% |
| 25 | Croatia | 21 | 0.7% |
| 26 | Pakistan | 21 | 0.7% |
| 27 | Singapore | 17 | 0.5% |
| 28 | Israel | 17 | 0.5% |
| 29 | Malaysia | 15 | 0.5% |
| 30 | Serbia | 14 | 0.4% |
| 31 | Sweden | 14 | 0.4% |
| 32 | Slovenia | 13 | 0.4% |
| 33 | Portugal | 13 | 0.4% |
| 34 | Argentina | 12 | 0.4% |
| 35 | Austria | 11 | 0.4% |
| 36 | Hungary | 11 | 0.4% |
| 37 | Bulgaria | 10 | 0.3% |
| 38 | Netherlands | 10 | 0.3% |
| 39 | Lebanon | 10 | 0.3% |
| 40 | Norway | 9 | 0.3% |
| 41 | Indonesia | 9 | 0.3% |
| 42 | Ukraine | 9 | 0.3% |
| 43 | United Arab Emirates | 9 | 0.3% |
| 44 | Tunisia | 8 | 0.3% |
| 45 | Switzerland | 8 | 0.3% |
| 46 | Bangladesh | 8 | 0.3% |
| 47 | Belgium | 8 | 0.3% |
| 48 | Iraq | 7 | 0.2% |
| 49 | Jordan | 7 | 0.2% |
| 50 | Nigeria | 6 | 0.2% |
| 51 | Qatar | 6 | 0.2% |
| 52 | Ireland | 6 | 0.2% |
| 53 | Chile | 5 | 0.2% |
| 54 | Lithuania | 5 | 0.2% |
| 55 | Nepal | 5 | 0.2% |
| 56 | Slovakia | 4 | 0.1% |
| 57 | Algeria | 4 | 0.1% |
| 58 | Denmark | 4 | 0.1% |
| 59 | Ethiopia | 4 | 0.1% |
| 60 | Viet Nam | 4 | 0.1% |
| 61 | South Africa | 3 | 0.1% |
| 62 | Sri Lanka | 3 | 0.1% |
| 63 | Cyprus | 3 | 0.1% |
| 64 | Albania | 3 | 0.1% |
| 65 | Palestine | 3 | 0.1% |
| 66 | Peru | 3 | 0.1% |
| 67 | New Zealand | 3 | 0.1% |
| 68 | Moldova | 3 | 0.1% |
| 69 | Morocco | 2 | 0.1% |
| 70 | Philippines | 2 | 0.1% |
| 71 | Bosnia and Herzegovina | 2 | 0.1% |
| 72 | Armenia | 2 | 0.1% |
| 73 | Bahrain | 2 | 0.1% |
| 74 | Czech Republic | 2 | 0.1% |
| 75 | Georgia | 2 | 0.1% |
| 76 | Colombia | 1 | 0% |
| 77 | Estonia | 1 | 0% |
| 78 | Bosnia | 1 | 0% |
| 79 | Angola | 1 | 0% |
| 80 | Anguilla | 1 | 0% |
| 81 | Brunei Darussalam | 1 | 0% |
| 82 | Cambodia | 1 | 0% |
| 83 | Cameroon | 1 | 0% |
| 84 | Reunion | 1 | 0% |
| 85 | Mali | 1 | 0% |
| 86 | Kazakhstan | 1 | 0% |
| 87 | Kosovo | 1 | 0% |
| 88 | Kuwait | 1 | 0% |
| 89 | Liberia | 1 | 0% |
| 90 | Libya | 1 | 0% |
| 91 | Sudan | 1 | 0% |
| 92 | Uruguay | 1 | 0% |
| 93 | Trinidad and Tobago | 1 | 0% |