Like IDEAS (Internet Documents in Economics Access Service) , this service take bibliographical information from RePEc, which in turn has "inputs" from many different sources. At last count, RePEc contained nearly 3 million items; many are working papers, but there is information many articles and other items too. Data in EconPapers is intertwined with that in RePEc Author Service (RAS) . Thus, when searching for a paper in EconPapers, the author information comes from RAS.