(Oort) (. 28.4.1900, ), . (1935). 1924 ( 1945-70 ). . 1927 , , . 1938 . . 1935-48 , 1958-61 . (1966).

.: Investigations concerning the rotational motion of the galactic system..., "Bulletin of the Astronomical Institutes of the Netherlandes", 1927, Bd 4; Dynamics of the galactic system in the vicinity of the sun, , 1928, Bd 4; Absorption and density distribution in the galactic system, , 1938, Bd 8.

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