Effects of temperature variations of the upper atmosphere on the formation of ionospheric layers: F2 Layer anomaly—F2 and F1 separation— F2 layer behaviour during magnetic stormsD. Lepechinsky · 1951

Sporadic-E ionization and anomalous increase in the rate of radar meteor counts during 1963K.M. Kotadia; K.G. Jani · 1967

Changes in the ionospheric F2-layer at a place near the Sq-current focus during geomagnetic stormsK.G. Jani; K.M. Kotadia · 1969