Key-title  

Optimization letters (Internet)

Identifiers
Resource information
Archival Status
logo Keepers

Title proper: Optimization letters.

Country: Switzerland

Medium: Online


logo Keepers
Status Publisher Keeper From To Updated Extent of archive
Preserved

Springer

CLOCKSS Archive

2007

2023

25/03/2024

1 to 18
In Progress

Springer

LOCKSS Archive

2012

2019

25/03/2024

6, 13
Preserved

Springer

LOCKSS Archive

2013

2018

25/03/2024

7 to 12
Preserved

Springer

Library of Congress

2018

2023

23/02/2024

12 (2 to 8); 13 (1 to 8); 14 (1 to 8); 15 (1 to 8); 16 (1 to 9); 17 (1 to 7)
Preserved

Springer Nature

National Digital Preservation Program, China

2007

2021

13/10/2023

Preserved : 1 (1 to 8); 2 (1 to 4); 3 (1 to 4); 4 (1 to 4); 5 (1 to 4); 6 (1 to 8); 7 (1 to 8); 8 (1 to 8); 9 (1 to 8); 11 (1 to 8); 12 (1 to 8); 13 (1 to 8); 14 (1 to 8); 15 (1 to 8)
Preserved

Springer Nature

National Digital Preservation Program, China

2007

2021

25/07/2023

Preserved : 1 (1 to 8); 2 (1 to 4); 3 (1 to 4); 4 (1 to 4); 5 (1 to 4); 6 (1 to 8); 7 (1 to 8); 8 (1 to 8); 9 (1 to 8); 11 (1 to 8); 12 (1 to 8); 13 (1 to 8); 14 (1 to 8); 15 (1 to 8)
Preserved

Springer Nature

National Digital Preservation Program, China

2007

2022

08/01/2024

Preserved : 1 (1 to 8); 2 (1 to 4); 3 (1 to 4); 4 (1 to 4); 5 (1 to 4); 6 (1 to 8); 7 (1 to 8); 8 (1 to 8); 9 (1 to 8); 11 (1 to 8); 12 (1 to 8); 13 (1 to 8); 14 (1 to 8); 15 (1 to 8); 16 (1 to 9)
Preserved

Springer

National Library of the Netherlands

2006

2019

20/10/2023

Preserved : 1 (1, 2, 4); 2 (1-4); 3 (1-4); 4 (1-4); 5 (1-4); 6 (1-8); 7 (1-6, 8); 8 (1-8); 9 (1-8); 10 (1-8); 11 (1-8); 12 (1-8); 13 (1-8)
Preserved

Springer

Portico

2007

2024

26/03/2024

Preserved : 2007: 1(1-4), 2008: 2(1-4), 2009: 3(1-4), 2010: 4(1-4), 2011: 5(1-4), 2012: 6(1-6), 2013: 7(1-6, 8), 2014: 8(1-8), 2015: 9(3-8), 2016: 10(1-8), 2017: 11(1-6, 8), 2018: 12(1-8), 2019: 13(1-8), 2018/2019/2020: 14(1-8), 2021: 15(1-8), 2022: 16(1-9), 2023: 17(2-9), 2024: 18(1-2)
Preserved

Springer

Scholars Portal

2007

2024

02/03/2024

Preserved : 1 (1 to 4); 2 (1 to 4); 3 (1 to 4); 4 (1 to 4); 5 (1 to 4); 6 (1 to 8); 7 (1 to 8); 8 (1 to 8); 9 (1 to 8); 10 (1 to 8); 11 (1 to 8); 12 (1 to 8); 13 (1 to 8); 14 (1 to 8); 15 (1 to 8); 16 (1 to 9); 17 (1 to 9); 18 (1)
Archival Status
Status Publisher Keeper From To Updated Extent of archive
Preserved

Springer

CLOCKSS Archive

2007

2023

25/03/2024

1 to 18
In Progress

Springer

LOCKSS Archive

2012

2019

25/03/2024

6, 13
Preserved

Springer

LOCKSS Archive

2013

2018

25/03/2024

7 to 12
Preserved

Springer

Library of Congress

2018

2023

23/02/2024

12 (2 to 8); 13 (1 to 8); 14 (1 to 8); 15 (1 to 8); 16 (1 to 9); 17 (1 to 7)
Preserved

Springer Nature

National Digital Preservation Program, China

2007

2021

13/10/2023

Preserved : 1 (1 to 8); 2 (1 to 4); 3 (1 to 4); 4 (1 to 4); 5 (1 to 4); 6 (1 to 8); 7 (1 to 8); 8 (1 to 8); 9 (1 to 8); 11 (1 to 8); 12 (1 to 8); 13 (1 to 8); 14 (1 to 8); 15 (1 to 8)
Preserved

Springer Nature

National Digital Preservation Program, China

2007

2021

25/07/2023

Preserved : 1 (1 to 8); 2 (1 to 4); 3 (1 to 4); 4 (1 to 4); 5 (1 to 4); 6 (1 to 8); 7 (1 to 8); 8 (1 to 8); 9 (1 to 8); 11 (1 to 8); 12 (1 to 8); 13 (1 to 8); 14 (1 to 8); 15 (1 to 8)
Preserved

Springer Nature

National Digital Preservation Program, China

2007

2022

08/01/2024

Preserved : 1 (1 to 8); 2 (1 to 4); 3 (1 to 4); 4 (1 to 4); 5 (1 to 4); 6 (1 to 8); 7 (1 to 8); 8 (1 to 8); 9 (1 to 8); 11 (1 to 8); 12 (1 to 8); 13 (1 to 8); 14 (1 to 8); 15 (1 to 8); 16 (1 to 9)
Preserved

Springer

National Library of the Netherlands

2006

2019

20/10/2023

Preserved : 1 (1, 2, 4); 2 (1-4); 3 (1-4); 4 (1-4); 5 (1-4); 6 (1-8); 7 (1-6, 8); 8 (1-8); 9 (1-8); 10 (1-8); 11 (1-8); 12 (1-8); 13 (1-8)
Preserved

Springer

Portico

2007

2024

26/03/2024

Preserved : 2007: 1(1-4), 2008: 2(1-4), 2009: 3(1-4), 2010: 4(1-4), 2011: 5(1-4), 2012: 6(1-6), 2013: 7(1-6, 8), 2014: 8(1-8), 2015: 9(3-8), 2016: 10(1-8), 2017: 11(1-6, 8), 2018: 12(1-8), 2019: 13(1-8), 2018/2019/2020: 14(1-8), 2021: 15(1-8), 2022: 16(1-9), 2023: 17(2-9), 2024: 18(1-2)
Preserved

Springer

Scholars Portal

2007

2024

02/03/2024

Preserved : 1 (1 to 4); 2 (1 to 4); 3 (1 to 4); 4 (1 to 4); 5 (1 to 4); 6 (1 to 8); 7 (1 to 8); 8 (1 to 8); 9 (1 to 8); 10 (1 to 8); 11 (1 to 8); 12 (1 to 8); 13 (1 to 8); 14 (1 to 8); 15 (1 to 8); 16 (1 to 9); 17 (1 to 9); 18 (1)
Record information

Last modification date: 06/02/2020

Type of record: Confirmed

ISSN Center responsible of the record: ISSN National Centre for Germany

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