See also: M.I. Katsnel’son, A.V. Trefilov, V.G. Vaks, V.G. Koreshkov, A.I. Likhtenshtein, S.V. Vonsovskii
PACS: 71.20.-b, 72.15.Eb, 65.40.De, 62.20.Dc, 71.15.-m