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NUMDAM (Open Access)
Available from 1959 until 2010.
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Publicly Available Content Database
Available from 01/06/2021.
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SpringerLink Journals - AutoHoldings
Available from 01/12/1997 volume: 86 issue: 1 until 01/12/2020 volume: 132 issue: 1.
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Springer Nature OA Free Journals
Available from 01/12/1959 volume: 1 issue: 1.