.Gmelin Handbook of inorganic chemistry：F perfluorohalogenoorgano compounds of main group elements．Pt. 5，aliphatic and aromatic nitrogen compounds (conclusion) formula index for pts. 7, 8, &9. System-nummer 5.Springer,1981.
Gmelin Handbook of inorganic chemistry：F perfluorohalogenoorgano compounds of main group elements．Pt. 5，aliphatic and aromatic nitrogen compounds (conclusion) formula index for pts. 7, 8, &9. System-nummer 5
