[1]Tetrahedron,1985,vol.41,p.387-392
[2]JournaloftheChemicalSociety.Chemicalcommunications,1980,p.770-772
[1]JournaloftheChemicalSociety.Chemicalcommunications,1980,p.770-772
[2]Tetrahedron,1985,vol.41,p.387-392
[1]JournaloftheChemicalSociety.Chemicalcommunications,1980,p.770-772
[1]JournaloftheChemicalSociety.Chemicalcommunications,1980,p.770-772