Study of He I Emission Lines in the Solar Atmosphere. II. The Infrared Lines at 10 830 Å and 20 581 Å
Streete, J., Macqueen, R., & Tandberg-Hanssen, E. (1973). Study of He I Emission Lines in the Solar Atmosphere. II. The Infrared Lines at 10 830 Å and 20 581 Å. Astronomy And Astrophysics, 28, 125-130.
