N. David Mermin, The topological theory of defects in ordered media, Rev. Mod. Phys. 51 (1979) 591 doi:10.1103/RevModPhys.51.591
(including a review of basic homotopy theory)
Last revised on May 28, 2022 at 14:42:16. See the history of this page for a list of all contributions to it.