INSPIRE-HEP, an open access digital library for the field of high energy physics developed by Stanford University, has been the main literature database for universities, colleges, and research institutions since when?
INSPIRE-HEP: INSPIRE-HEP is an open access digital library for the field of high energy physics (HEP). INSPIRE-HEP:  It is the successor of the Stanford Physics Information Retrieval System (SPIRES) database, the main literature database for high energy physics since the 1970s. Stanford Physics Information Retrieval System: The Stanford Physics Information Retrieval System (SPIRES) is a database management system developed by Stanford University.
i don't know