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Duesler, E. N.; Fe Gargallo, M.; Tapscott, R. E. (1982). "Structure of lel lel lel tris[(±)-2,3-butanediamine]-cobalt(III) chloride". Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry. 38 (4): 1300–1303. Bibcode:1982AcCrB..38.1300D. doi:10.1107/S0567740882005585.