[1]ChemistryofHeterocyclicCompounds,2001,vol.37,#5,p.567-573
[1]ChemistryofHeterocyclicCompounds,2001,vol.37,#5,p.567-573
[1]ChemistryofHeterocyclicCompounds,2001,vol.37,#5,p.567-573
[1]ChemistryofHeterocyclicCompounds,2001,vol.37,#5,p.567-573
[1]ChemistryofHeterocyclicCompounds,2001,vol.37,#5,p.567-573