20200206093800.0 scholarsportal Scholars Portal 2007/2024 2024-03-02 Preserved : 1 to 18 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) Preserved Springer Optimization Letters 1862-4472 1862-4480 Optimization letters (Internet) ndpp National Digital Preservation Program, China 2007/2022 2024-01-08 Preserved : 1 to 9, 11 to 16 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 Nature Optimization Letters 1862-4480 2007/2021 2023-07-25 Preserved : 1 to 9, 11 to 15 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 Optimization Letters 1862-4480 loc Library of Congress 2018/2023 2024-02-23 12 to 17 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 Optimization Letters 1862-4480 1862-4480 2007/2021 2023-10-13 Preserved : 1 to 9, 11 to 15 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 Optimization Letters 1862-4480 Optimization letters. lockss LOCKSS Archive 2012/2019 2024-03-25 6, 13 6, 13 In Progress Springer Optimization Letters 1862-4480 1862-4472 1862-4472 1862-4480 2013/2018 2024-03-25 7 to 12 7 to 12 Preserved Springer Optimization Letters 1862-4480 1862-4472 Optimization letters (Internet) portico Portico 2007/2024 2024-03-26 Preserved : 2007: 1, 2008: 2, 2009: 3, 2010: 4, 2011: 5, 2012: 6, 2013: 7, 2014: 8, 2015: 9, 2016: 10, 2017: 11, 2018: 12, 2019: 13, 2018/2019/2020: 14, 2021: 15, 2022: 16, 2023: 17, 2024: 18 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 Optimization Letters 1862-4480 1862-4472 clockss CLOCKSS Archive 2007/2023 2024-03-25 1 to 18 1 to 18 Preserved Springer Optimization Letters 1862-4480 1862-4472 Switzerland 1862-4480 edepot National Library of the Netherlands 2006/2019 2023-10-20 Preserved : 1-13 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 Optimization letters 1862-4480 http://link.springer.com/journal/11590 Optimization letters.