Lanczos, Kornel (1997) [1924]. "On a Stationary Cosmology in the Sense of Einstein's Theory of Gravitation". General Relativity and Gravitation. 29 (3). Springland Netherlands: 363–399. doi:10.1023/A:1010277120072. S2CID116891680.
Lanczos, Kornel (1997) [1924]. "On a Stationary Cosmology in the Sense of Einstein's Theory of Gravitation". General Relativity and Gravitation. 29 (3). Springland Netherlands: 363–399. doi:10.1023/A:1010277120072. S2CID116891680.