Scholars Portal
1978-2025
Preserved
2026-03-19
Preserved : 1 (1); 2; 3; 4; 5; 6; 7; 8; 9; 10; 11; 12; 13; 14; 15; 16 (2); 17 (1, 2); 18 (1, 2); 19 (1, 2); 20 (1-2); 21; 22; 23; 24; 26; 27 (2); 28 (1, 2); 29 (1, 2); 30 (1, 2); 31 (1, 2); 32 (1, 2); 33 (1, 2); 34 (1, 2); 35 (1, 2); 36; 37 (1, 2); 38 (1, 2); 39 (1, 2); 40 (1, 2); 41 (1, 2); 42 (1, 2); 43 (1)
LOCKSS Archive
2005-2012
Preserved
2026-04-06
23, 24, 26, 28 to 30
CLOCKSS Archive
2010-2015
Preserved
2026-04-06
28 to 33
Portico
1978-2015
Preserved
2026-04-09
Preserved : 1978: 1(1), 1980: 2(1), 1981: 3(1), 1983: 4(1), 1984: 5(1), 1985: 6(1), 1986: 7(1), 1990: 8(1), 1991: 9(1), 1992: 10(1), 1993: 11(1), 1994: 12(1), 1995: 13(1), 1996: 14(1), 1997: 15(1), 1998: 16(1-2), 1999: 17(1-2), 2000: 18(1-2), 2001: 19(1-2), 2002: 20(1-2), 2003: 21(1), 2004: 22(1), 2005: 23(1), 2007: 24(1), 2008: 26(1), 2009: 27(1-2), 2010: 28(1-2), 2011: 29(1-2), 2012: 30(1-2), 2013: 31(1-2), 2014: 32(1-2), 2015: 33(1-2)
LOCKSS Archive
2005-2008
Preserved
2026-04-06
Portico
2005-2007
Preserved
2026-04-09
Preserved : 2005: 23, 2007: 24(1, )
Portico
2008-2008
Preserved
2026-04-09
Preserved : 2008: 26
LOCKSS Archive
1978-2024
Preserved
2026-04-06
1 to 24, 26 to 42
CLOCKSS Archive
1978-2025
Preserved
2026-04-06
ahead-of-print to 24, 26 to 43
LOCKSS Archive
2025-2025
In Progress
2026-04-06
43
Portico
1978-2025
Preserved
2026-04-09
Preserved : 1978: 1(1), 1980: 2(1), 1981: 3(1), 1983: 4(1), 1984: 5(1), 1985: 6(1), 1986: 7(1), 1990: 8(1), 1991: 9(1), 1992: 10(1), 1993: 11(1), 1994: 12(1), 1995: 13(1), 1996: 14(1), 1997: 15(1), 1998: 16(1-2), 1999: 17(1-2), 2000: 18(1-2), 2001: 19(1-2), 2002: 20(1-2), 2003: 21(1), 2004: 22(1), 2005: 23(1), 2007: 24(1), 2008: 26(1), 2009: 27(1-2), 2010: 28(1-2), 2011: 29(1-2), 2012: 30(1-2), 2013: 31(1-2), 2014: 32(1-2), 2015: 33(1-2), 2016: 34(1-2), 2017: 35(1-2), 2018: 36(1-2), 2019: 37(1-2), 2020: 38(1-2), 2021: 39(1-2), 2022: 40(1-2), 2023: 41(1-2), 2024: 42(1-2), 2025: 43(1)
National Digital Preservation Program, China
2017-2018
Preserved
2025-12-04
Preserved : 35 (2); 36 (1)
National Digital Preservation Program, China
2017-2018
Preserved
2025-12-04
Preserved : 35 (1, 2); 36 (1)
National Digital Preservation Program, China
1997-2024
Preserved
2025-12-04
Preserved : 2 (1-2); 3 (2); 4 (1, 2); 15 (1); 16 (2); 17 (1, 2); 18 (1, 2); 19 (1, 2); 21 (1); 22; 23; 24; 26; 27 (2); 28 (1, 2); 29 (1, 2); 31 (1, 2); 32 (1, 2); 33 (1, 2); 34 (1, 2); 35 (1, 2); 36 (1, 2); 37 (1, 2); 38 (1, 2); 39 (1, 2); 41 (1, 2); 42 (1, 2)
Library of Congress
2018-2024
Preserved
2025-04-07
35 (2); 36 (1, 2); 37 (1, 2); 38 (1, 2); 39 (1, 2); 40 (1, 2); 41 (1, 2); 42 (1)