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Portico
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Preserved
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2026-02-12
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Preserved : 2007: 7(1), 2008: 8(1), 2009: 9(1), 2010: 10(1)
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ZBW - Leibniz Information Centre for Economics
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Preserved
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2025-12-15
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Preserved : 7:1;8:1;9:1;10:1;11:1;11:1;12:1 to 12:3;13:1;14:1;15:1 to 15:2;16:1 to 16:2;17:1;17:1 to 17:2;18:1;19:1;20:1 to 20:2;18:1 to 18:2;19:1 to 19:2;20:1;19:2;20:1;20:2;21:1;22:1 to 22:2;22:1 to 22:2
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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 17 (2); 18 (, 1, 2); 19 (, 1, 2); 20 (, 1, 2); 21 (, 1, 2); 22 (, 1, 2); 23 (, 1, 2); 24 (, 1, 2); 25 (, 1); 2017; 2018; 2020; 2021; 2022; 2023; 2024; 2025
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National Digital Preservation Program, China
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Preserved
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2025-12-04
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Preserved : 1 (1, 2); 2 (1, 2); 7 (1); 8; 9; 11; 12 (2, 3); 13 (1); 14; 15 (2); 16 (1, 2); 17 (1, 2); 18 (1, 2); 19 (1, 2); 21 (1, 2); 22 (1, 2); 23 (1, 2)
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Library of Congress
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Preserved
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2025-04-07
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1; 4 (1); 5 (1); 6 (1); 14 (1); 15 (1, 2); 16 (1, 2); 17 (1, 2); 18 (1, 2); 19 (1, 2); 20 (1, 2); 21 (1, 2); 22 (1, 2); 23 (1, 2); 24 (1)
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Scholars Portal
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Preserved
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2025-09-02
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Preserved : 1 (1); 7 (, 1); 8 (, 1); 9 (, 1); 10 (, 1); 11 (, 1); 12 (, 1 to 3); 13 (, 1); 14 (, 1); 15 (, 1, 2); 16 (, 1, 2); 20 (, 2); 21 (, 1, 2); 2001; 2007; 2008; 2009; 2010; 2011; 2012; 2013; 2014; 2015; 2016; 2020
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Portico
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Preserved
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2026-02-12
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Preserved : 2001: 1(1-2)
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Portico
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Preserved
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2026-02-12
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Preserved : 2007: 7(1), 2008: 8(1), 2009: 9(1), 2010: 10(1), 2011: 11(1), 2012: 12(1-3), 2013: 13(1), 2014: 14(1), 2015: 15(1-2), 2016: 16(1-2), 2017: 17(1-2), 2018: 18(1-2), 2019: 19(1-2), 2020: 20(1-2), 2021: 21(1-2), 2022: 22(1-2), 2023: 23(1-2), 2024: 24(1-2), 2025: 25(1-2)
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