Comment on "Circular dichroism in the angle-resolved photoemission spectrum of the high-temperature Bi2Sr2CaCu2O8+δ superconductor: can these measurements be interpreted as evidence for time-reversal symmetry breaking?"

Phys Rev Lett. 2010 Oct 29;105(18):189701; author reply 189702. doi: 10.1103/PhysRevLett.105.189701. Epub 2010 Oct 27.
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