The earliest published book on Springer Nature Link is D. J. L. Römer’s “Herzog Friedrich Wilhelm als Mensch in treuen Zügen aus seinem Gemälde”, published in 1815. One of the earliest articles on our platforms is “Metastasis of rheumatism to the heart” by Robert Law M.D., &c.&c. from 1832.
Some of our content has their year of publication set to the next calendar year.
You can therefore filter your COUNTER 5.0 & 5.1 reports on YOP (year of publication) between 1815 and next year.
YOP data for journals is available from January 2019 onwards. Reports for earlier activity will show 0001 (Unknown) as YOP.