[1]ChemistryofHeterocyclicCompounds(NewYork,NY,UnitedStates),1973,vol.9,p.1207-1208
[2]KhimiyaGeterotsiklicheskikhSoedinenii,1973,vol.9,#10,p.1334-1336
[3]ChemistryofHeterocyclicCompounds(NewYork,NY,UnitedStates),1976,vol.12,p.738-741
[4]KhimiyaGeterotsiklicheskikhSoedinenii,1976,vol.12,#7,p.886-890
[1]ChemistryofHeterocyclicCompounds(NewYork,NY,UnitedStates),1973,vol.9,p.1207-1208
[2]KhimiyaGeterotsiklicheskikhSoedinenii,1973,vol.9,#10,p.1334-1336
[1]ChemistryofHeterocyclicCompounds(NewYork,NY,UnitedStates),1990,vol.26,#11,p.1305-1309
[2]KhimiyaGeterotsiklicheskikhSoedinenii,1990,#11,p.1563-1568