The SSPSF (stochastic self-propagating star formation) model of star formation was proposed by Mueller & Arnett in 1976, generalized afterward by Gerola & Seiden in 1978 and Gerola, Seiden, & Schulman in 1980. This model proposes that star formation propagates via the action of shock waves produced by stellar winds and supernovae that compose the interstellar medium.
- Mueller, M. W.; Arnett, W. D. (December 1976). "Propagating star formation and irregular structure in spiral galaxies". The Astrophysical Journal 210: 670–678. doi:10.1086/154873.
- Gerola, H.; Seiden, P. E. (July 1978). "Stochastic star formation and spiral structure of galaxies". The Astrophysical Journal 223: 129–135, 137, 139. doi:10.1086/156243.
- Gerola, H.; Seiden, P. E.; Schulman, L. S. (December 1980). "Theory of dwarf galaxies". The Astrophysical Journal 242: 517–527. doi:10.1086/158485.
- "Play with our Prototypes - Gaslight". Eu.spore.com. Retrieved December 1, 2011.
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