Physical Review B - Condensed Matter and Materials Physics, 81-23, 2010 doi:10.1103/PhysRevB.81.235210
Stefanowicz Wiktor, Sztenkiel Dariusz, Faina Bogdan, Grois Andreas, Rovezzi Mauro, Devillers Thibaut, D'Acapito Francesco, Navarro-Quezada Andrea, Li Tian, Jakieła Rafał, Sawicki MacIej, Dietl Tomasz, Bonanni Alberta