International movement of open access to scientific knowledge: a quantitative analysis of country involvement

The study aims are to conduct a systematic quantitative analysis of Open Access (OA) Instruments and Initiatives, justify and develop the methodology for calculating the index of countries’ involvement in the Open Access movement. The authors identified all the significant OA-Instruments and OA-Initiatives, which were counted on the basis of the records in their OA-registers. Consolidation of records in these registers, according to literature data from the moment of their launch, made it possible to identify important patterns and features of the evolution of the OA-movemen