those documents other than research articles, reviews and conference papers.
The set of journals have been ranked according to their SJR and divided into four equal groups, four quartiles.
Q1 (green) comprises the quarter of the journals with the highest values, Q2 (yellow) the second highest values, Q3 (orange) the third highest values and Q4 (red) the lowest values.
The SJR is a size-independent prestige indicator that ranks journals by their 'average prestige per article'.
It is based on the idea that 'all citations are not created equal'.
SJR is a measure of scientific influence of journals that accounts for both the number of citations received by a journal and the importance or prestige of the journals where such citations come from It measures the scientific influence of the average article in a journal, it expresses how central to the global scientific discussion an average article of the journal is.
This indicator counts the number of citations received by documents from a journal and divides them by the total number of documents published in that journal.
The chart shows the evolution of the average number of times documents published in a journal in the past two, three and four years have been cited in the current year.
The two years line is equivalent to journal impact factor ™ (Thomson Reuters) metric.
Evolution of the total number of citations and journal's self-citations received by a journal's published documents during the three previous years.
Journal Self-citation is defined as the number of citation from a journal citing article to articles published by the same journal.
Evolution of the number of total citation per document and external citation per document (i.e.