Passing along an increase in ad costs
Crossref DOI link: https://doi.org/10.1186/s41937-021-00079-9
Published Online: 2021-11-17
Published Print: 2021-12
Update policy: https://doi.org/10.1007/springer_crossmark_policy
Varian, Hal
Text and Data Mining valid from 2021-11-17
Version of Record valid from 2021-11-17
Article History
Accepted: 9 November 2021
First Online: 17 November 2021