Warren Buffett buys another $127 million worth of Occidental Petroleum stock - The San Diego Union-Tribune
Oxy's Sweetener a Bitter Pill for Warren Buffett - WSJ
Warren Buffett says Berkshire Hathaway won't take full control of Occidental Petroleum
Warren Buffett's Berkshire Hathaway buys more Occidental Petroleum shares
Stream episode Warren Buffett Investing Billions Into Occidental Petroleum With Prince Dykes by The Investor Show podcast | Listen online for free on SoundCloud
Warren Buffett's company has bet over $45 billion on the oil sector
Buffett's company buys more shares of Occidental Petroleum, now owns more than 25% - Fort Worth Business Press
Berkshire Hathaway hikes Occidental Petroleum stake after new purchases (NYSE:OXY) | Seeking Alpha
Warren Buffett's firm buys more Occidental Petroleum and now owns more than 25% of the oil producer | AP News
warren buffett portfolio: Here's why Warren Buffett loves oil giant Occidental Petroleum - The Economic Times
Warren Buffett Adds to Occidental Petroleum Corp Stake
Warren Buffett Invested $4.5 Billion in Occidental Stock in 5 Days
Berkshire Hathaway cleared to buy up to 50% of Occidental Petroleum. - The New York Times