by Oldfield, J. H., Mack, D. L.
Published in Analyst (London) (1962)

by Oldfield, J. H., Bridge, E. P.
Published in Analyst (London) (1960)

by Wager, H. G., Oldfield, J. H., Bridge, E. P., Bradfield, E. G., Gidley, J. A. F., Jones, J. T., Wilson, A. L.
Published in Analyst (London) (1961)