[1]JournalofHeterocyclicChemistry,1985,vol.22,p.7-10
[1]JournalofHeterocyclicChemistry,1985,vol.22,p.7-10
[1]JournalofHeterocyclicChemistry,1985,vol.22,p.7-10
[1]Patent:US2003/13708,2003,A1
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[1]Patent:US6559173,2003,B1