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Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Hurewicz W., Steenrod N. E. Homotopy Relations in Fibre Spaces. Proc Natl Acad Sci U S A. 1941 Jan 15;27(1):60–64. doi: 10.1073/pnas.27.1.60. [DOI] [PMC free article] [PubMed] [Google Scholar]
