Calculation formula: (for example) the impact factor of a journal in 20 1 1 year, published in June of 20 12. Impact factor = the number of citations of papers published in this journal in 2009 and 10/the total number of papers published in this journal in 2009 and 10. If you want to see the latest impact factors of this journal, please refer to MedSci impact factor query.
Science (same as science)
To inquire about the influencing factors of Chinese journals, we can use the Comprehensive Citation Report of China Academic Journals (edited by Wan Jinkan, Science Press) jointly published by China Academic Journals (CD-ROM Edition) and China Scientific Literature Metrology and Evaluation Center. The impact factors of SCI are generally published by Thomson Reuters in June each year. This is the most accurate official version, and other websites are for reference only, not 100% accurate.