The impact factor (Journal Impact Factor) indicates how often articles of a journal have been cited on average over a given period. It is used to measure the research impact of journals and is indirectly also a popular but critically discussed indicator of a researcher’s scientific reputation. Due to great professional differences, it is suitable only for comparison of journals within narrow research fields. Impact factors can be found in the database Journal Citation Reports. For more information please get in contact with our bibliometrics team.