https://en.wikipedia.org/wiki/Anna_Chapman
https://en.wikipedia.org/wiki/Ella_Winter#Publications
Maria Butina
https://www.washingtonpost.com/world/2018/12/14/travel-agencies-fake-marriage-ensnaring-ernest-hemingway-russian-agents-long-history-united-states/
https://www.washingtonpost.com/world/2018/12/14/travel-agencies-fake-marriage-ensnaring-ernest-hemingway-russian-agents-long-history-united-states/?utm_term=.107423c1f3fe
https://archive.ph/IFcvQ
https://web.archive.org/web/20190205025613/https://www.washingtonpost.com/world/2018/12/14/travel-agencies-fake-marriage-ensnaring-ernest-hemingway-russian-agents-long-history-united-states/
fr: Dames du Kremlin
