Citation: Mamedov, Kh.S.; Dzhafarov, G.G.; Abdullaev, G.K.; Amiraslanov, I.R.; Usubaliev, B.T.; Aliev, O.A. (1978). Preparation and structure of crystals of the double metaborate of holmium and cobalt Ho Co (B O2)5. Zhurnal Neorganicheskoi Khimii, 23, pp. 2332-2335.