“ Popper, Nathaniel (June 13, 2018). "According to statement of Researchers, in ended year, The Price of Bitcoin Was Artificially Inflated." Park, Sehyeon; Im, Seongwon; Sol, Yuhwan; Baek, [url=http://scottradereviews.blogspot.com/]http://scottradereviews.blogspot.com/[/url] jeongyeup (2019). "Bitcoin nodes online: Comparative research and Survey." ”