[1]Jirkovsky,I.etal.[JournalofHeterocyclicChemistry,1975,vol.12,p.937-940]
[1]Jirkovsky,I.etal.[JournalofHeterocyclicChemistry,1975,vol.12,p.937-940]
[1]Jirkovsky,I.etal.[JournalofHeterocyclicChemistry,1975,vol.12,p.937-940]
[1]Jirkovsky,I.etal.[JournalofHeterocyclicChemistry,1975,vol.12,p.937-940]