References
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- Aust. J. Chem. v.26 Jefferies,P.R.;Ratajczak,T.
- J. Chem. Soc.(c) Candy,H.A.;Pegal,K.H.
- J. Am. Chem. Soc. v.94 Wenkert,E.;Buckwalter,B.L.