A photometric study of some stellar spectra : δ Cephei, θ Cygni, π Cephei, δ Equulei. Part 1, Catalogue of line intensities /

Autor Pannekoek, Anton, 1873-1960, Albada, G. B. van
Vydáno 1939

A photometric study of some stellar spectra : δ Cephei, θ Cygni, π Cephei, δ Equulei. Part 2, Discussion of results /

Autor Pannekoek, Anton, 1873-1960, Albada, G. B. van
Vydáno 1946