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.
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Kwartalnik Historii Kultury Materialnej
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[Everyday life in war and peace, Germany 1618-48: an outline of the subject]