Physical Review B (2013) - Comments
doi: 10.1103/physrevb.88.201406  issn: 1098-0121  issn: 1550-235x 

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Sampsa K. Hämäläinen, Mark P. Boneschanscher, Peter H. Jacobse, Ingmar Swart, Katariina Pussi, Wolfgang Moritz, Jouko Lahtinen, Peter Liljeroth, Jani Sainio