2Wickman F E.The Crystal Structure of Shortite,Ca2Na2(CO3)3[J].Arkiv fr Mineralogi och Geologi.,1949,Band 1 nr4:95.
3Werner P E, Eriksson L,Westdahl M.TREOR,A Semi-exhaustive Trial-and-error Powder Indexing Program for All Symmetries,[J].J.Appl.Crystallogr.,1985,18(5): 367.