참고문헌
- Aspects of Topology C.O.Christenson;W.L.Voxman
- J. Kor. math. Soc. v.29 no.2 Set-valued contractibility of hyperspaces K.Hur;S.W.Lee;P.K.Lim;C.J.Rhee
- Trans. Amer. Math. Soc. v.52 Hyperspaces of a continuum J.L.Kelley
- TopologyⅠ.Ⅱ K.Kuratowski
- Hyperspace of sets S.B.Nadler,Jr.
- Topology Proc. v.8 An admissible condition for contractible hyperspace T.Nishiura;C.J.Rhee
- Houston Math. J. v.8 Contractibility of the hyperspace of subcontinua T.Nishiura;C.J.Rhee
- Bull. de la Soc. Royale des Sciences de Liege v.56 M-set and contraction C(X) C.J.Rhee
- Topology Proc. v.10 Obstructing sets for hyperspace contraction C.J.Rhee
- Topology Proc. v.7 On a contractible hyperspace condition C.J.Rhee
- Annals of Math. v.34 Regular families of curves H.Whitney