Footnote 43 (Pg 57) of HPSCI Report on Russian Active Measures (3-22-18) from Pg 45

https://republicans-intelligence.house.gov/uploadedfiles/final_russia_investigation_report.pdf

Sussmann interview 12-18-17

https://intelligence.house.gov/uploadedfiles/ms53.pdf

Slate article

http://www.slate.com/articles/news_and_politics/cover_story/2016/10/was_a_server_registered_to_the_trump_organization_communicating_with_russia.html

IC Assessment

https://www.intelligence.senate.gov/sites/default/files/documents/ICA_2017_01.pdf