A method for the determination of effective recombination coefficient and negative-ion-to-electron ratio in the ionosphere

von DelBello, Reginalda
Veröffentlicht in Riv. Ital. di Geofisica ; 1976,3 (1976)

The estimation of some parameters of the ionosphere at sunspot maximum

von Cumani, Aldo
Veröffentlicht in DelBello, Reginalda A method for the determination of effective recombination coefficient and negative-ion-to-electron ratio in the ionosphere (1977)

The main national time scales compared with the Italian UTC (IEN) time scale in the period 1970 - 1974

von Angeli, Maria Teresa
Veröffentlicht in Alta Frequenza ; 1975,44 (1975)