%AGrégoire, Thomas%AKatz, Emanuel%ASanz, Veronica%BJournal Name: Physical Review D; Journal Volume: 85; Journal Issue: 5 %D2012%IAmerican Physical Society %JJournal Name: Physical Review D; Journal Volume: 85; Journal Issue: 5 %K %MOSTI ID: 10003433 %PMedium: X %TFour top quarks in extensions of the standard model %XNot Available %0Journal Article