Gorelova, Liudmila A. [P:(DE-H253)PIP1028915] ; Pakhomova, Anna S. [P:(DE-H253)PIP1024093] ; Krzhizhanovskaya, Maria G. [P:(DE-H253)PIP1027264] ; Winkler, B. [P:(DE-H253)PIP1011391] ; Krivovichev, Sergey V. [P:(DE-H253)PIP1015148] ; Dubrovinsky, Leonid S. [P:(DE-H253)PIP1014493]