References
- Ermanson , L. V. , Godovikov , N. N. and Blagoveshchensky , V. S. 1986 . Izv. Akad. Nauk SSSR. Ser. Khim. , : 423 – 427 .
- The details are available on request from Cambridge Crystallographic Data Centre, 12 Union Road, Cambridge, CB2 1EZ, UK