[1]Bovicelli,Paolo;Mincione,Enrico;Ortaggi,Giancarlo[TetrahedronLetters,1991,vol.32,#30,p.3719-3722]
[2]Marko,IstvanE.;Richardson,PaulR.;Bailey,Mark;Maguire,AnitaR.;Coughlan,Niall[TetrahedronLetters,1997,vol.38,#13,p.2339-2342]
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