Galactic civilizations - Population dynamics and interstellar diffusion

@article{Newman1978GalacticC,
  title={Galactic civilizations - Population dynamics and interstellar diffusion},
  author={W. I. Newman and C. Sagan},
  journal={Icarus},
  year={1978},
  volume={46},
  pages={293-327}
}
Abstract The interstellar diffusion of galactic civilizations is reexamined by potential theory; both numerical and analytical solutions are derived for the nonlinear partial differential and difference equations which specify a range of relevant models, drawn from blast wave physics, soil science, and, especially, population biology. An essential feature of these models is that, for all civilizations, population growth must be limited by the carrying capacity of the planetary environments… Expand
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