[1]JournalofHeterocyclicChemistry,1991,vol.28,p.1481-1484
[1]JournalofHeterocyclicChemistry,1991,vol.28,p.1481-1484
[1]JournalofHeterocyclicChemistry,1991,vol.28,p.1481-1484
[1]JournalofHeterocyclicChemistry,1991,vol.28,p.1481-1484
[1]JournalofHeterocyclicChemistry,1991,vol.28,p.1481-1484