References
- Jones , W.T. and Lyttleton , J.W. 1969 . N.Z Jl agric. Res. , 12 : 31 – 31 .
- Mangan , J.L. 1958 . N.Z. Jl agric. Res. , 1 : 140 – 140 .
- Mangan , J.L. 1959 . N.Z. JI agric. Res. , 2 : 47 – 47 .
- Mansfield , W.W. 1963 . Aust. J. Chem. , 16 : 76 – 76 .