1. The Theory of Position Finding;Daniels;J.R. Statist. Soc., Series B,1951
2. Ionospheric Behaviour at Khartoum during the Eclipse of 25 February 1952;Minnis;J. Atmosph. Terr. Phys.,1955
3. The Effective Recombination Coefficient in the E and F1 Layers;Minnis,1956
4. Ionospheric Measurements at Ibadan during the Eclipse of the Sun, 25 February 1952;Piggott,1952
5. Statistical Theory of D.F. Fixing;Stansfield,1947