David Koch: US-Milliardär im Alter von 79 Jahren gestorben - manager magazin
What Is the Koch Brothers' Net Worth? See How They Spend Their Wealth
Charles and David Koch: billionaire donors in the line of fire | Financial Times
David und Charles Koch investieren in „Time“-Verlag: In die Höhle des Löwen
What do Charles and David Koch want? - Lawyers, Guns & Money
Amerikanische Milliardäre: Charles und David Koch
David Koch and Charles Koch | TIME
Who are the Koch brothers? | PBS NewsHour
KOCH Newsroom | Announcement from Charles Koch on David Koch's Retirement
David Koch, Billionaire Who Fueled Right-Wing Movement, Dies at 79 - The New York Times
Charles Koch bereut seine Tea Party-Unterstützung
Charles and David Koch | Biographies, Politics, & Facts | Britannica
Koch and Co.
Charles and David Koch - TheXtraordinary
Budget for Charles and David Koch-backed network: almost $1 billion for 2016 | Daily Mail Online
Charles Koch — CEO of Koch Industries (#381) – The Blog of Author Tim Ferriss
How Charles and David Koch will wield their power in the 2016 race.
KOCH Newsroom | Brothers yes, but Charles and David Koch are not "brainless robots"
The Koch Brothers' Covert Ops | The New Yorker
David Koch Net Worth 2021 - David Koch Has Died
USA: Milliardäre Charles und David Koch helfen Republikanern vs. Obama - DER SPIEGEL
Kochs to double election spending in 2016 | Financial Times
Trump tariffs could trigger U.S. recession, billionaire Charles Koch tells GOP ranks | The Japan Times
Charles & David Koch: Run the Republican Party | Gentleman's Journal
Inside Charles and David Koch's Business Empire | Fortune
KOCH Newsroom | Charles Koch on the passing of his brother, David Koch
What Is the Koch Brothers' Net Worth? See How They Spend Their Wealth
