Distributed by Thomson Reuters and managed by FECYT (Spanish Foundation for Science and Technology). Journal Citation Reports® offers a systematic, objective means to critically evaluate the world's leading journals, with quantifiable, statistical information based on citation data. By compiling articles' cited references, JCR helps to measure research influence and impact at the journal and category levels, and shows the relationship between citing and cited journals. Available in Science and Social Sciences editions. Dates covered 1997- present.