[1]Starostenko,N.E.;Dat,FungTien;Serova,I.A.;Kamenetskii,A.V.;Suvorov,N.N.[ChemistryofHeterocyclicCompounds,1991,vol.27,#5,p.508-511][KhimiyaGeterotsiklicheskikhSoedinenii,1991,vol.27,#5,p.638-641]
[2]Starostenko,N.E.;Dat,FungTien;Serova,I.A.;Kamenetskii,A.V.;Suvorov,N.N.[ChemistryofHeterocyclicCompounds,1991,vol.27,#5,p.508-511][KhimiyaGeterotsiklicheskikhSoedinenii,1991,vol.27,#5,p.638-641]