impact factors for IUCr journals

The latest impact factors released by Thomson Reuters are for 2015. The impact factors for IUCr Journals are summarised below.

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Impact factors
201520142013201220112010200920082007200620052004200320022001200019991998
Acta Crystallographica Section A2.3332.3252.0692.2442.07654.3349.932.0512.3851.6761.7911.8291.5581.4171.7491.4911.6012.146
Acta Crystallographica Section B2.8922.1842.0952.1752.2861.8291.8012.3412.1632.1721.9105.4183.6432.0261.9551.7341.7001.612
Acta Crystallographica Section C0.4790.3260.5350.4920.5180.7450.7820.5610.7190.8960.7770.7280.8280.6590.5700.5430.5810.577
Acta Crystallographica Section D2.5122.6807.23214.10312.6196.3262.2572.9432.6201.6871.4011.6932.2081.7602.1243.0672.9352.244
Acta Crystallographica Section E0.3470.4130.4110.3670.5080.5670.5810.4910.453
Acta Crystallographica Section F0.6470.5240.5680.5520.5060.5630.5510.6060.645
IUCrJ3.105
Journal of Applied Crystallography2.5703.9843.9503.3435.1523.7943.0183.2123.6292.4955.2483.5342.3241.8712.5831.7521.9011.569
Journal of Synchrotron Radiation1.8772.7943.0222.1862.7262.3351.9942.3332.9782.382.3921.9191.1440.8851.5190.9241.1141.874

Impact factors are generally calculated based on a three-year period. For example, the 2015 impact factor for a journal would be calculated as follows:

2015 Impact Factor = A/B

where A = number of times articles published in 2013-2014 were cited in tracked journals during 2015 and B = number of articles published in 2013-2014.

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