Data from "Grey Literature citations in the age of Digital Repositories and Open Access"

The data collected is based on a sample corpus built on: a) the bibliographical references of articles in four journals over the years 2012-2014; b) the proceedings of two international conferences held in 2012 and 2014. The full text paper, presented at the International Conference Series on Grey Literature, measures grey citations in the years 2012, 2013 and 2014 and describes the features of GL documents mentioned in the areas Computational Linguistics and Computer Science and Engineering. The data from the study was collected and arranged in 2016. The original information was extracted directly from the primary sources, i.e. the bibliographical references of the articles published in the selected journals and proceedings. The dataset consists of all the analyzed bibliographical references of the chosen journals and proceedings accompanied by some informative classes processed to perform calculations and provide statistical information. It contains the number of bibliographic references and the number and percentages of usage of "grey" references and "grey" document types in the considered timespan. The data derived from this sample are suitable for different types of reuse and functional for anyone interested in citation analysis.