Are you familiar with this source type? In the age of digital archives, particularly open access ones, this is a term you’ll want to know.
“Eprints are the digital texts of peer-reviewed research articles, before and after refereeing. Before refereeing and publication, the draft is called a preprint. The refereed, accepted final draft is called a postprint” (ePrints FAQ). They are integral to the open access movement in the academic research community – primarily in scientific fields (a movement with both supporters and detractors) and can be found in archives and digital repositories around the globe such as Cornell’s arXiv and many in ROAR.