The abstract of Tolman’s paper reads: FEBRUARY 15, 1939 PHYSICAL REVIEW Static Solutions of Einstein's Field Equations for Spheres of Fluid RICHARD C. TOLMAN Norman Bridge Laboratory of Physics, California Institute of Technology, Pasadena, California (Received January 3, 1939) A method is developed for treating Einstein's field equations, applied to static spheres of Auid, in such a manner as to provide explicit solutions in terms of known analytic functions. A number of new solutions are thus obtained, and the properties of three of the new solutions are examined in detail. It is hoped that the investigation may be of some help in connection with studies of stellar structure. (See the accompanying article by Professor Oppenheimer and Mr. Volkoff.)
https://files.mastodon.social/media_attachments/files/112/038/390/327/730/888/original/e0e98ff63bb6d5d9.jpeg