Spirin, Oleg M., Svitlana M. Ivanova, and Oleksandr V. Novytskyi. “CONCEPTUAL BASIS OF THE NATIONAL ACADEMY OF PEDAGOGICAL SCIENCES OF UKRAINE DIGITAL LIBRARIES NETWORK CONSTRUCTION”. Information Technologies and Learning Tools 31, no. 5 (November 7, 2012). Accessed October 25, 2021. https://journal.iitta.gov.ua/index.php/itlt/article/view/743.