[1]ChemistryofHeterocyclicCompounds,1965,vol.1,p.219-223 KhimiyaGeterotsiklicheskikhSoedinenii,1965,vol.1,p.334-341
[1]ChemistryofHeterocyclicCompounds,1976,vol.12,p.1123-1124 KhimiyaGeterotsiklicheskikhSoedinenii,1976,vol.12,p.1355-1356
[1]ChemistryofHeterocyclicCompounds,1971,vol.7,p.436-438 KhimiyaGeterotsiklicheskikhSoedinenii,1971,vol.7,p.468-470
[1]ChemistryofHeterocyclicCompounds,1965,vol.1,p.148-150 KhimiyaGeterotsiklicheskikhSoedinenii,1965,vol.1,p.227-231
[1]ChemistryofHeterocyclicCompounds,1971,vol.7,p.436-438 KhimiyaGeterotsiklicheskikhSoedinenii,1971,vol.7,p.468-470