Masthead.Published in:Astronomische Nachrichten, 1926, v. 228, n. 13, p. fmi, doi. 10.1002/asna.19262281301Publication type:Article
Der Kreisfall im Problem der n + 1 Körper.Published in:Astronomische Nachrichten, 1926, v. 228, n. 13, p. 233, doi. 10.1002/asna.19262281302By:Lindow, M.Publication type:Article