Economics teaching to MBAs.
2. A primer on bank capital and stress tests
http://www.moneyandbanking.com/commentary/2014/11/3/a-primer-on-bank-capital
3. How cartels lower quality
http://conversableeconomist.blogspot.co.uk/2014/10/the-light-bulb-cartel-and-planned.html
4. Marginal cost in action; google ads
