[1]Radinov,Rumen;Chanev,Christo;Haimova,Marietta[JournalofOrganicChemistry,1991,vol.56,#15,p.4793-4796]
[1]Ryabova;Evstratova;Makarov;Tafeenko;Granik[ChemistryofHeterocyclicCompounds,2004,vol.40,#10,p.1352-1358]
[2]Nikpour,Mohsen;Hasanzadeh,Neda[JournalofHeterocyclicChemistry,2020,vol.57,#12,p.4380-4384]
[1]Ryabova;Evstratova;Makarov;Tafeenko;Granik[ChemistryofHeterocyclicCompounds,2004,vol.40,#10,p.1352-1358]