Ryukhtin, V. [P:(DE-HGF)0] ; Strunz, P. [P:(DE-HGF)0] ; Kopitsa, G. [P:(DE-HGF)0] ; Ezdakova, K. [P:(DE-HGF)0] ; Gubanova, N. [P:(DE-HGF)0] ; Ivanov, V. [P:(DE-HGF)0] ; Baranchikov, A. [P:(DE-HGF)0] ; Angelov, B. [P:(DE-HGF)0] ; Feoktystov, Artem [P:(DE-Juel1)144382] ; Pipich, V. [P:(DE-Juel1)130893] ; Levinský, P. [P:(DE-HGF)0]