Hα survey of the solar corona at Pic-du-Midi
Hα-emission stars (Macconnell+, 1981)
Hβ Doppler-velocity fields within sites of flares in a solar active region
Hβ line profile variation and the structure of the Akn 120 emitting region
Hβ radiation in the spectrum of the night sky
Hβ spectra of high-redshift QSOs: Eigenvector 1 at high luminosities
Hγ & Hδ absorption features (Worthey+ 1997)
H∞ Analysis and Synthesis by Genetic Algorithms of the Attitude Control System of the Brazilian Satellite Launcher
H∞ Method Applied to Launcher Control During Atmospheric Flight
H∞ Techniques: From Research to Industrial Applications