Research was conducted by Nicholas Bloom of Stanford University, Rafaella Sadun of the Harvard Business School, and John Van Reenen of the London School of Economics.

FORBES: Most Economics is Just Organised Common Sense

The iPhone Dev Team has accused him of stealing their code to create the program, and many in the hacker community instead credit Erica Sadun, a blogger for the Unofficial Apple Weblog.

FORBES: Unlocked iPhones For All

Raffaella Sadun, of the London School of Economics, has found that supermarket chains, denied an out-of-town site, are more likely to set up in town centres themselves, bringing the battle straight to the high street.

ECONOMIST: A retailer branches out

Nick Bloom, of Stanford University, and Rafaella Sadun and John Van Reenen, of the London School of Economics, find that British factories of American multinationals are more productive than the country's other foreign-owned establishments, which in turn are sharper than locally owned rivals.

ECONOMIST: Economics focus