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References
- ↑ Coram, D.; Duvall, P. (1977). "Approximate fibrations". Rocky Mountain Journal of Mathematics. 7 (2): 275–288. doi: 10.1216/RMJ-1977-7-2-275 .
- ↑ Hughes, Taylor & Williams 1995 , § 1.
- ↑ Hughes, Taylor & Williams 1995 , Introduction
- Hughes, C.B.; Taylor, L.R.; Williams, E.B. (July 1995). "Rigidity of fibrations over nonpositively curved manifolds". Topology. 34 (3): 565–574. doi: 10.1016/0040-9383(94)00035-J .
