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Lua i Stíl Chicago (17ú heag.)Dewolff, P., et al. SYMBOLS FOR SYMMETRY ELEMENTS AND SYMMETRY OPERATIONS - FINAL REPORT OF THE INTERNATIONAL UNION OF CRYSTALLOGRAPHY AD-HOC COMMITTEE ON THE NOMENCLATURE OF SYMMETRY. 1992.
Lua MLA (9ú heag.)Dewolff, P., et al. SYMBOLS FOR SYMMETRY ELEMENTS AND SYMMETRY OPERATIONS - FINAL REPORT OF THE INTERNATIONAL UNION OF CRYSTALLOGRAPHY AD-HOC COMMITTEE ON THE NOMENCLATURE OF SYMMETRY. 1992.
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