The elemental and isotopic abundance of metallic ions in the lower E-region as measured by a cryogenically pumped quadrupole mass spectrometer

Mass spectrometric measurements of positive ions at altitudes from 64 to 112 kilometers

1965 • 378 citations

Production and prediction of sporadic E

1970 • 227 citations

Negative ions in the lower ionosphere: A mass-spectrometric measurement

1971 • 113 citations

Neutral composition of the atmosphere in the 100- to 200-kilometer range

1964 • 87 citations

Laser radar measurements of the atmospheric sodium layer

1970 • 85 citations

Processes for meteoric elements in the E-region

1969 • 79 citations

A mass spectrometric determination of the neutral constituents in the lower thermosphere above Sardinia

1968 • 28 citations

Upper-Atmospheric Sodium and Stratospheric Warmings at High Latitudes

1967 • 28 citations

Recent advances in meteor spectroscopy.

1971 • 1 citations