[1]ChemistryofHeterocyclicCompounds,1990,vol.26,p.204-208 KhimiyaGeterotsiklicheskikhSoedinenii,1990,vol.26,p.237-241
[1]ChemistryofHeterocyclicCompounds,1990,vol.26,p.204-208 KhimiyaGeterotsiklicheskikhSoedinenii,1990,vol.26,p.237-241
[1]ChemistryofHeterocyclicCompounds,1990,vol.26,p.204-208 KhimiyaGeterotsiklicheskikhSoedinenii,1990,vol.26,p.237-241