Topological Defects - This is an introductory set of lecture notes on topological defects, given to an audience with interests ranging from astronomy to particle physics.
Topological Defects in Cosmology - A review by Ajit M. Srivastava of various topological defects in particle theoryu models of the early universe. [PDF]
Cosmology from Topological Defects - Alejandro Gangui's graduate-level lecture notes about the possible cosmological role and observational signatures of topological defects. Based on lectures delivered at the Xth Brazilian School on Cosmology and Gravitation in 2002. (March 21, 2003)