Stanchev, P., Ancheva, H., Pavlov, R., & Simeonov, G. (2020, September). The Eleventh National Information Day: Open Science, Open Data, Open Access, Bulgarian Open Science Cloud. Digital Presentation and Preservation of Cultural and Scientific Heritage.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Stanchev, Peter, Hristiyaniya Ancheva, Radoslav Pavlov, و George Simeonov. "The Eleventh National Information Day: Open Science, Open Data, Open Access, Bulgarian Open Science Cloud." Digital Presentation and Preservation of Cultural and Scientific Heritage Sep. 2020.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Stanchev, Peter, et al. "The Eleventh National Information Day: Open Science, Open Data, Open Access, Bulgarian Open Science Cloud." Digital Presentation and Preservation of Cultural and Scientific Heritage, Sep. 2020.