1. VLF reflections from the ionosphere in the presence of a transverse magnetic field;Barber;J. Atmospheric Terrest. Phys.,1959
2. The normal phase variations of the 18 kc/s signals from NBA observed at Frankfurt, Germany;Brady;NBS Tech.,1963
3. The normal phase variations of the 18 kc/s signals from NBA observed at Maui, Hawaii;Brady;NBS Tech.,1964
4. The normal phase variations of the 18 kc/s signals from NBA observed at Boulder, Colorado, U.S.A.;Brady;NBS Tech.,1964
5. Observations on phase stability of signals from NBA (18 kc/s) Panama as received in New Zealand;Burtt;Proc. lnst. Elec. Engrs. (London),1963