SYMBOLS FOR SYMMETRY ELEMENTS AND SYMMETRY OPERATIONS - FINAL REPORT OF THE INTERNATIONAL UNION OF CRYSTALLOGRAPHY AD-HOC COMMITTEE ON THE NOMENCLATURE OF SYMMETRY - Dewolff, P; Billiet, Y; Donnay, J; Fischer, W; Galiulin, R; Glazer, A; Hahn, T; Senechal, M; Shoemaker, D; Wondratschek, H; Wilson, A; Abrahams, S (1992)