The image is a screenshot of a webpage from the Repec.org website. The webpage is titled "General Principles of Repec (Research Papers in Economics) is a collaborative effort of hundreds of volunteers in 86 countries to enhance the dissemination of research. The heart of the project is a decentralized bibliographic database of working papers, journal articles, and software components. The collected data is then collected in various sources that serve the community. So far, over 1,800 archives from 86 countries have contributed about 1.9 million working paper pieces from 2,300 journals and 4,200 working papers. About 45,000 authors have served every week. See below on how you can be part of this initiative. The following services that use (principle) and contribute Repec data. They also report usage statistics that can be used towards the REPEC rankings.