Stanchev, P., Angelieva, K., Zherkova, Y., Pavlov, R., & Simeonov, G. (2019). The Tenth National Information Day: Open Science, Open Data, Open Access, Bulgarian Open Science Cloud. Digital Presentation and Preservation of Cultural and Scientific Heritage, 9, 403–408. https://doi.org/10.55630/dipp.2019.9.44