1. Methods of Measurements and Results of Lower Ionosphere Structure,1974
2. The effect of the ionosphere on radiowave systems,1981
3. Medium, long and very long wave propagation (at frequencies less than 300 kHz),1982
4. Experience with and proposed improvements of the International Reference Ionosphere (IRI),1984
5. Model ionosphere for D-region at summer noon during sunspot maximum;Bain,1972