On the displacements of lines in the spectrum of Delta Cephei /

Autor Zonn, Włodzimierz, 1905-1975
Vydáno 1950

Absorption lines in the spectra of quasi-stellar objects /

Autor Roeder, Robert Charles, 1937-, Verreault, R. T.

On the possibility of measuring the polarization of the "Electron-Corona" without eclipses by a polarimetric analysis of the Fraunhofer absorption lines /

Autor Öhman, Yngve, 1903-1988
Vydáno 1949