Business enterprise expenditure on R&D (BERD) represents the component of GERD incurred by units belonging to the Business enterprise sector (see the definition of Business enterprise sector). It is the measure of intramural R&D expenditures within the Business enterprise sector during a specific reference period.
R&D surveys.
OECD (2015), Frascati Manual 2015: Guidelines for Collecting and Reporting Data on Research and Experimental Development.