[1]HelveticaChimicaActa,1990,vol.73,p.1865-1878
[1]JournalofOrganicChemistry,1996,vol.61,p.7558-7563
[1]JournalofOrganicChemistry,1997,vol.62,p.4148-4154
[1]Tetrahedron,2000,vol.56,p.1315-1320
[1]JournaloftheChemicalSociety.PerkinTransactions1(2001),2000,p.2073-2078