May 26, 2022

New Conference Paper: “When is an Article Actually Published? An Analysis of Online Availability, Publication, and Indexation Dates”

The following paper has been accepted for publication at the 15th International Conference on Scientometrics and Informetrics (ISSI) 2015 taking place in Turkey at the end of June.


When is an Article Actually Published? An Analysis of Online Availability, Publication, and Indexation Dates


Stefanie Haustein
Université de Montréal

Timothy D. Bowman
Université de Montréal

Rodrigo Costas
Centre for Science and Technology Studies, Leiden University


via arXiv


With the acceleration of scholarly communication in the digital era, the publication year is no longer a sufficient level of time aggregation for bibliometric and social media indicators.

Papers are increasingly cited before they have been officially published in a journal issue and mentioned on Twitter within days of online availability.

In order to find a suitable proxy for the day of online publication allowing for the computation of more accurate benchmarks and fine-grained citation and social media event windows, various dates are compared for a set of 58,896 papers published by Nature Publishing Group, PLOS, Springer and Wiley-Blackwell in 2012.

Dates include the online date provided by the publishers, the month of the journal issue, the Web of Science indexing date, the date of the first tweet mentioning the paper as well as the publication and first-seen dates. Comparing these dates, the analysis reveals that large differences exist between publishers, leading to the conclusion that more transparency and standardization is needed in the reporting of publication dates. The date on which the fixed journal article (Version of Record) is first made available on the publisher’s website is proposed as a consistent definition of the online date.

Direct to Full Text Article (10 pages; PDF)

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Gary Price ( is a librarian, writer, consultant, and frequent conference speaker based in the Washington D.C. metro area. Before launching INFOdocket, Price and Shirl Kennedy were the founders and senior editors at ResourceShelf and DocuTicker for 10 years. From 2006-2009 he was Director of Online Information Services at, and is currently a contributing editor at Search Engine Land.