• Presentation "Warren Buffett the Sage of Omaha"  Granite Equity Partners, St. Cloud, Minnesota.  April 2017
  • Presentation "Warren Buffett - Greatest Investor or Greatest Business Teacher?" São Paulo CFA Society, São Paulo, Brazil.  January 2015
  • Interviewed by Dinherio.  "10 Questions about the Warren Buffett as an Investor."  In Brazilian, 18 March 2015, page 46, São Paulo, Brazil.