1. Nicolini M, Bandoli G, Mazzi U (eds) (1985) In: Technetium in chemistry and nuclear medicine 2, Cortina International, Verona
2. Nicolini M, Bandoli G, Mazzi U (eds) (1990) In: Technetium in chemistry and nuclear medicine 3, Cortina International, Verona
3. Constable EC, Housecroft CE (1994) Coord Chem Rev 131: 153
4. Schwochau K, Pleger U (1993) Radiochim Acta 63: 103
5. Bryan JC, Sattelberger AP (1994) In: Wilkinson G (ed) Comprehensive organometallic chemistry. Pergamon Press, Oxford, in press