Deliverska M, Jecheva G, Zherkova Y, Stanchev P, Pavlov R. The Fifth National Information Day: Open Access to Scientific Information and Data. DiPP [Internet]. 2014 Sep. 30 [cited 2024 May 5];4:361-3. Available from: https://dipp.math.bas.bg/dipp/article/view/dipp.2014.4.47