Scholars Portal
1997-2024
Preserved
2025-09-02
Preserved : 23 (1 to 12); 24 (, 1 to 12); 25 (, 1 to 12); 26 (, 1 to 12); 27 (, 1 to 12); 28 (, 1 to 12); 29 (, 1 to 12); 30 (, 1 to 12); 31 (, 1 to 12); 32 (, 1 to 12); 33 (, 1 to 12); 34 (, 1 to 12); 35 (, 1 to 12); 36 (, 1 to 12); 37 (, 1 to 12); 38 (, 1 to 12); 39 (, 1 to 12); 40 (, 1 to 12); 41 (, 1 to 12); 42 (, 1 to 12); 43 (, 1 to 12); 44 (, 1 to 12); 45 (, 1 to 12); 46 (, 1 to 12); 47 (, 1 to 12); 48 (, 1 to 12); 49 (, 1 to 11); 50 (, 1 to 4); 1997; 1998; 1999; 2000; 2001; 2002; 2003; 2004; 2005; 2006; 2007; 2008; 2009; 2010; 2011; 2012; 2013; 2014; 2015; 2016; 2017; 2018; 2019; 2020; 2021; 2022; 2023; 2024
CLOCKSS Archive
1997-2025
Preserved
2026-02-09
23 to 51
Portico
1997-2025
Preserved
2026-02-12
Preserved : 1997: 23(1-12), 1998: 24(1-12), 1999: 25(1-12), 2000: 26(1-12), 2001: 27(1-12), 2002: 28(1-12), 2003: 29(1-12), 2004: 30(1-12), 2005: 31(1-12), 2006: 32(1-12), 2007: 33(1-12), 2008: 34(1-12), 2009: 35(1-12), 2010: 36(1-12), 2011: 37(1-12), 2012: 38(1-9, 11-12), 2013: 39(1-6, 8, 10-12), 2014: 40(1-11), 2015: 41(1-12), 2016: 42(1-12), 2017: 43(1-12), 2018: 44(1-12), 2019/2020: 45(1-12), 2020: 46(1-12), 2021: 47(1-7, 10-12), 2022: 48(1-12), 2023: 49(1, S 1, 2-4, S 4, 5-12), 2024: 50(1-4), 2025: 51(1-8)
LOCKSS Archive
2012-2019
In Progress
2026-02-09
38, 45
LOCKSS Archive
2013-2018
Preserved
2026-02-09
39 to 44
Library of Congress
2018-2024
Preserved
2025-04-07
43 (12); 44 (1 to 12); 45 (1 to 12); 46 (1 to 12); 47 (1 to 12); 48 (1 to 12); 49 (1, S1, S2, 2, 3, S3, S4, 4 to 12); 50 (1, 2)
National Digital Preservation Program, China
1997-2011
Preserved
2025-10-23
Preserved : 3 (1 to 9, 11, 12); 23 (1 to 9, 11, 12); 24 (1 to 9, 11, 12); 25 (1 to 9, 11, 12); 26 (1 to 9, 11, 12); 27 (1 to 9, 11, 12); 28 (1 to 9, 11, 12); 29 (1 to 9, 11, 12); 31 (1 to 9, 11, 12); 32 (1 to 9, 11, 12); 33 (1 to 9, 11, 12); 34 (1 to 9, 11, 12); 35 (1 to 9, 11, 12); 36 (1 to 9, 11, 12); 37 (1 to 9)
National Digital Preservation Program, China
1997-2011
Preserved
2025-12-04
Preserved : 3 (1 to 9, 11, 12); 23 (1 to 9, 11, 12); 24 (1 to 9, 11, 12); 25 (1 to 9, 11, 12); 26 (1 to 9, 11, 12); 27 (1 to 9, 11, 12); 28 (1 to 9, 11, 12); 29 (1 to 9, 11, 12); 31 (1 to 9, 11, 12); 32 (1 to 9, 11, 12); 33 (1 to 9, 11, 12); 34 (1 to 9, 11, 12); 35 (1 to 9, 11, 12); 36 (1 to 9, 11, 12); 37 (1 to 9)
National Digital Preservation Program, China
2011-2024
Preserved
2025-10-23
Preserved : 4 (1 to 9, 11, 12); 5 (1, 2); 37 (11, 12); 38 (1 to 9, 11, 12); 39 (1 to 9, 11, 12); 41 (1 to 9, 11, 12); 42 (1 to 9, 11, 12); 43 (1 to 9, 11, 12); 44 (1 to 9, 11, 12); 45 (1 to 9, 11, 12); 46 (1 to 9, 11, 12); 47 (1 to 9, 11, 12); 48 (1 to 9, 11, 12); 49 (1 to 7)
National Digital Preservation Program, China
2011-2024
Preserved
2025-12-04
Preserved : 4 (1 to 9, 11, 12); 5 (1, 2); 37 (11, 12); 38 (1 to 9, 11, 12); 39 (1 to 9, 11, 12); 41 (1 to 9, 11, 12); 42 (1 to 9, 11, 12); 43 (1 to 9, 11, 12); 44 (1 to 9, 11, 12); 45 (1 to 9, 11, 12); 46 (1 to 9, 11, 12); 47 (1 to 9, 11, 12); 48 (1 to 9, 11, 12); 49 (1 to 7)
National Library of the Netherlands
1997-2019
Preserved
2024-12-15
Preserved : 4; 23 (1-12); 24 (1-12); 25 (1-12); 26 (1-12); 27 (1-12); 28 (1-12); 29 (1-8, 10-12); 30 (1-12); 31 (1-12); 32 (4-12); 33 (1, 4-12); 34 (1-12); 35 (1-12); 36 (1-12); 37 (2-12); 38 (1-12); 39 (1-8, 10-12); 40 (1-12); 41 (1-12); 42 (1-12); 43 (1-12); 44 (1-12); 45 (1-10); 49 (C)