RIS information in RIS file format — two letters, two spaces and a hyphen; no quotation mark required, e.g. TY - JOUR AU - Shannon, Claude E. PY - 1948/07// TI - A Mathematical Theory of Communication T2 - Bell System Technical Journal SP - 379 EP - 423 VL - 27 ER - https://en.wikipedia.org/wiki/RIS_(file_format)