Citation data are also deposited at Crossref by many publishers but until recently these data were not openly available. A little over two years ago, the Initiative for Open Citations was launched to encourage publishers to make these data open. At the outset only about 1% of the data were openly available but now that figure has risen to more than 56%. The decision to open up citation data has been taken by fully open access and mixed-model publishers alike and has already provided a rich and open dataset of more than 500 million citations, which can be used for research and the development of new services to navigate and interrogate the literature.
[Emphasis Ours] To encourage further progress towards making 100% of citation data openly available, from January 2020 OASPA will introduce the requirement that members who deposit their citation data with Crossref must also make their data openly available in line with I4OC. All that is necessary is to send an email to email@example.com to request this. We recognise, however, that not all publishers have the resources to deposit such data in the first place, in particular our smallest members, however we do encourage members to take this step if they can.
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