[1] A.SANTORO,C.S.Choi,AND J.E.ABEL.ACta Cryst.B31 2126-2128(1975)
[2] M.BEDARD,H.HUBER,J.L.MYERS AND GEORGE F WRIGHT CANADA.J.Chem.40 2278-2299(1962)
[3] C.S.CHOI AND R.W.H.SMALL.Acta Cryst.B26 1235-1249(1970)
[4] D.N.J.WHITE AND M.H.P.GOY.J.C.S.Peikin P 43-46(1975)
[5] K.A.KERR AND J P.ASHMORE Acta.Cryst A30 176-179(1974)
[6] International Table for x-ray Crystallography KYNOCH PRESS BIRMINGHAM Vol Ⅲ 202(1962)
[7] H IWASAKI AND T.ITO Acta Cryst.A33 227-229(1977)
[8] L.KARLE,Acta Cryst.1320 2119(1969)
[9] A.I.KITAIGORODSKY "Molecular Crystals and Molecules" 127 (1973)