Electrons in a cool material are confined to a restricted number of discrete energy levels, with the lowest occupied first.

ECONOMIST: Microrefrigeration

The Postberg area of the park is opened especially for viewing the fields of flowers, with a restricted number of vehicles allowed access.

BBC: South Africa's Western Cape: The secret coast

Limited-overs cricket - as its name suggests - is restricted to a maximum number of overs, and in the modern era, international limited-overs cricket is divided between one-day internationals (ODIs) and Twenty20 internationals.

BBC: The difference between Test and limited-overs cricket

Other firms, said Metcalfe, have restricted company phones to a smaller number of people to make the implementation of recording easier and presumably less costly.

FORBES: London Traders Must Record Their Mobile Trades Starting Monday

Mr Michael has won the block-vote support of a number of unions following ballots restricted to union delegates, and is thought likely to enjoy the support of the majority of assembly candidates.

BBC: Blair back in Wales, backing Michael

He is also looking at regular fitness tests for officers amid what he describes as a "dramatic" and unexplainable increase in the number of them on restricted duties.

BBC: Analysis: Can police pay be cut?

The public company issues a larger number of shares (say 900, 000 shares), usually restricted in terms of when they can be sold, to purchase the Chinese company.

FORBES: Fraud In Chinese Reverse Mergers on American Exchanges -- And We're Surprised?

Although it was restricted in publishing information about individual doctors, the paper was able to expose a number of instances of fraud and abuse.

WSJ: Judge Ends 33-Year Injunction That Shielded Medicare Data on Doctors

But even in those more restricted frameworks, companies are becoming repeat customers and using students to tackle a series of strategic initiatives over a number of years.

WSJ: Real Work for Future M.B.A.s