Internet Archive
1980-1986
Preserved
2025-08-08
1 to 7
Scholars Portal
1985-2026
Preserved
2026-03-19
Preserved : 6 (1 to 3); 7 (1 to 3); 8 (1 to 3); 9 (1 to 3); 10 (1 to 3); 11 (1 to 3); 12 (1 to 3); 13 (1 to 3); 14 (1 to 3); 15 (1 to 3); 16 (1 to 3); 17 (1 to 3); 18 (1 to 3); 19 (1 to 3); 20 (1 to 3); 21 (1 to 3); 22 (1 to 3); 23 (1 to 3); 24 (1 to 3); 25 (1 to 3); 26 (1 to 3); 27 (1 to 3); 28 (1 to 3); 29 (1 to 4); 30 (1 to 4); 31 (1 to 4); 32 (1 to 4); 33 (1 to 4); 34 (1 to 4); 35 (1 to 4); 36 (1 to 4); 37 (1 to 4); 38 (1 to 4); 39 (1 to 4); 40 (1, 3, 4); 41 (1 to 4); 42 (1 to 4); 43 (1 to 4); 44 (1 to 4); 45 (1 to 4); 46 (1 to 4); 47 (1)
Portico
1999-2026
Preserved
2026-04-30
Preserved : 1999: 20(1-3), 2000: 21(1-3), 2001: 22(1-3), 2002: 23(1-3), 2003: 24(1-3), 2004: 25(1-3), 2005: 26(1-3), 2006: 27(1-3), 2007: 28(1-3), 2008: 29(1-4), 2009: 30(1-4), 2010: 31(1-4), 2011: 32(1-4), 2012: 33(1-4), 2013: 34(1-4), 2014: 35(1-4), 2015: 36(1-4), 2016: 37(1-4), 2017: 38(1-4), 2018: 39(1-4), 2019: 40(1-4), 2020: 41(1-4), 2021: 42(1-4), 2022: 43(1-4), 2023: 44(1-4), 2024: 45(1-4), 2025: 46(1-4), 2026: 47(1)
LOCKSS Archive
1980-2024
Preserved
2026-05-04
1 to 45
CLOCKSS Archive
1980-2025
Preserved
2026-05-04
ahead-of-print to 46
LOCKSS Archive
2025-2026
In Progress
2026-05-04
46, 47
Library of Congress
2010-2024
Preserved
2025-04-07
31 (1 to 4); 32 (1 to 4); 33 (1 to 4); 34 (1 to 4); 35 (1 to 4); 36 (1 to 4); 37 (1 to 4); 38 (1 to 4); 39 (1 to 4); 40 (1 to 4); 41 (1 to 4); 42 (1 to 4); 43 (1 to 4); 44 (1 to 4); 45 (1 to 4)
National Digital Preservation Program, China
1997-2025
Preserved
2025-12-04
Preserved : 2 (1 to 3); 3 (1 to 4); 4 (1 to 4); 18 (1 to 3); 19 (1 to 3); 21 (1 to 3); 22 (1 to 3); 23 (1 to 3); 24 (1 to 3); 25 (1 to 3); 26 (1 to 3); 27 (1 to 3); 28 (1 to 3); 29 (1 to 4); 31 (1 to 4); 32 (1 to 4); 33 (1 to 4); 34 (1 to 4); 35 (1 to 4); 36 (1 to 4); 37 (1 to 4); 38 (1 to 4); 39 (1 to 4); 41 (1 to 4); 42 (1 to 4); 43 (1 to 4); 44 (1 to 4); 45 (1 to 4); 46 (1)