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Table 3.

Unpaywall cross-reference: DOI and year of publication

 Total with DOI 2019DOI confirmed Unpaywall 2019
Scopus 115,273 111,422 
WoS 101,377 96,712 
HAL 66,836 63,413 
ADS 15,731 15,410 
PubMed 55,516 48,047 
MAG 101,885 102,338 
Total Corpus FR-2019   139,514 
 Total with DOI 2019DOI confirmed Unpaywall 2019
Scopus 115,273 111,422 
WoS 101,377 96,712 
HAL 66,836 63,413 
ADS 15,731 15,410 
PubMed 55,516 48,047 
MAG 101,885 102,338 
Total Corpus FR-2019   139,514 
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