Scholars Portal
2007-2026
Preserved
2026-03-19
Preserved : 29 (2 to 6); 30 (1 to 6); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 6); 39 (1 to 6); 40 (1 to 6); 41 (1 to 6); 42 (1 to 6); 43 (1 to 6); 44 (1 to 6); 45 (1 to 5); 46 (2 to 6); 47 (1 to 6); 48 (1)
CLOCKSS Archive
2007-2026
Preserved
2026-04-06
29 to 48
Portico
2007-2026
Preserved
2026-04-09
Preserved : 2007: 29(1-6), 2008: 30(1-6), 2009: 31(1-6), 2010: 32(1-6), 2011: 33(1-6), 2012: 34(1-4, 6), 2013: 35(1-6), 2014: 36(1-5), 2015: 37(1-6), 2016: 38(1-6), 2017: 39(1-6), 2018: 40(1-6), 2019/2020: 41(1-6), 2020: 42(1-6), 2021: 43(1-6), 2022: 44(1-5), 2023: 45(1-6), 2024: 46(1-6), 2025: 47(1-6), 2026: 48(1)
LOCKSS Archive
2012-2019
In Progress
2026-04-06
34, 41
LOCKSS Archive
2013-2018
Preserved
2026-04-06
35 to 40
Library of Congress
2018-2024
Preserved
2025-04-07
39 (5); 40 (1 to 6); 41 (1 to 6); 42 (1 to 6); 43 (1 to 6); 44 (1 to 6); 45 (1 to 6); 46 (1 to 4)
National Digital Preservation Program, China
2007-2024
Preserved
2025-10-23
Preserved : 3 (1 to 6); 4 (1 to 6); 29 (1 to 6); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 6); 39 (1 to 6); 41 (1 to 6); 42 (1 to 6); 43 (1 to 6); 44 (1 to 6); 45 (1 to 5); 46 (1 to 6)
National Digital Preservation Program, China
2007-2024
Preserved
2025-12-04
Preserved : 3 (1 to 6); 4 (1 to 6); 29 (1 to 6); 31 (1 to 6); 32 (1 to 6); 33 (1 to 6); 34 (1 to 6); 35 (1 to 6); 36 (1 to 6); 37 (1 to 6); 38 (1 to 6); 39 (1 to 6); 41 (1 to 6); 42 (1 to 6); 43 (1 to 6); 44 (1 to 6); 45 (1 to 5); 46 (1 to 6)
National Digital Preservation Program, China
2010-2011
Preserved
2025-10-23
Preserved : 32 (2 to 6); 33 (1 to 3)
National Digital Preservation Program, China
2010-2011
Preserved
2025-12-04
Preserved : 32 (2 to 6); 33 (1 to 3)
National Library of the Netherlands
2007-2019
Preserved
2024-12-15
Preserved : 29 (2-6); 30 (1-6); 31 (1-6); 32 (1-6); 33 (1-6); 34 (1-6); 35 (1-6); 36 (1-6); 37 (1-6); 38 (1-6); 39 (1-6); 40 (1-6); 41 (1-5)