Wuestner Sebastian, Pusch Andreas, Tsakmakidis Kosmas L, Hamm Joachim M, Hess Ortwin
Blackett Laboratory, Department of Physics, Imperial College London, South Kensington Campus, London, SW7 2AZ, United Kingdom.
Phys Rev Lett. 2011 Dec 16;107(25):259701; discussion 259702. doi: 10.1103/PhysRevLett.107.259701. Epub 2011 Dec 13.