See also: V.A. Akulichev, L.R. Gavrilov, V.G. Grebinnik, V.A. Zhukov, G. Libman, A.P. Manych, L.D. Rozenberg, Yu.I. Rudin
PACS: 29.40.-n, 14.40.Aq, 43.35.Yb