Åke Wallenquist

1904

• Dark matter in southern open clusters
• A catalogue of photoelectric magnitudes and colours of visual double and multiple systems
• A photometric investigation of the open cluster Messier 35 (N. G. C. 2168)
• An attempt to determine photovisual magnitudes without a colour-filter
• Astrofysikens grunder
• Astronomin i vår tid
• Dark matter in open clusters
• Determinations of magnitude differences in double stars
• Determinations of magnitude differences in southern double stars
• Dictionary of astronomical terms
• Investigations based on the radial velocities of spectroscopic binaries and eclipsing variables
• On the apparent distributions and properties of triple and multiple stars