Andreeva, Svetlana, Svetlana Velikanova, Natalia Kozhushkova, Svetlana Ovcharova, Aleksandra Makarova, and Oksana Chernykh. 2018. “Archive Activities in Terms of Electronic Document Authenticity and Copy Number Variation”. Amazonia Investiga 7 (17), 531-40. https://www.amazoniainvestiga.info/index.php/amazonia/article/view/769.