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References to 'M\"obius strip'
1. 4 surface bundles by juanman
2. deformation retract by mathcam
3. feature of Mobius strip by juanman
4. Klein bottle by vernondalhart
5. non orientable surface by juanman
6. topics on low dimensional topology by juanman
7. vector bundle by rspuzio
8. vector field by mathcam
9. y-homeomorphism by juanman