"U.S. v. Konstantin Ignatov Complaint". United States District Attorney's Office Southern District of New York. 6 March 2019. Archived from the original on 12 April 2022. Retrieved 26 July 2022.
"U.S. v. Konstantin Ignatov Complaint". United States District Attorney's Office Southern District of New York. 6 March 2019. Archived from the original on 12 April 2022. Retrieved 26 July 2022.