J. Sawkill
发表
A. P. Green,
J. Sawkill,
1961
.
R. Honeycombe,
J. Sawkill,
1954
.
D. R. Schwarzenberger,
J. Sawkill,
1960
.
J. Sawkill,
1955,
Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences.