The ease of access to information resources is becoming increasingly important when consulting a source of information. When researchers weigh the factors that lead them to decide which articles to read, the second most relevant factor, following the topic of the article, is the ease of access online. According to a recent survey, the ease of access is the main reason to choose to read a publication, even more so for young researchers [1]. A recent analysis of article downloading developed by researchers from 4 universities in Spain (Universidad de Burgos, León, Salamanca, and Valladolid) of the Elsevier, Emerald Springer, and Wiley journals shows that the downloads found have increased in the years 2012-2018, with Elsevier and ScienceDirect being the most used provider by far compared to the rest [2]. A priori, the demand for information is elastic, due to the variety of preferences of researchers, the search for information is concentrated in a limited number of reputable titles and linked to obtaining stability in academia [3]