[1]ChemischeBerichte,1898,vol.31,p.2535
[1]ChemistryofHeterocyclicCompounds,1988,vol.24,p.1000-1008 KhimiyaGeterotsiklicheskikhSoedinenii,1988,p.1213-1221
[1]ChemistryofHeterocyclicCompounds,1988,vol.24,p.1000-1008 KhimiyaGeterotsiklicheskikhSoedinenii,1988,p.1213-1221
[2]ChemistryofHeterocyclicCompounds,1988,vol.24,p.1000-1008 KhimiyaGeterotsiklicheskikhSoedinenii,1988,p.1213-1221
[1]ChemistryofHeterocyclicCompounds,1988,vol.24,p.1000-1008 KhimiyaGeterotsiklicheskikhSoedinenii,1988,p.1213-1221