1. J.G. Anaya, Making holes in the hyperspace of subcontinua of finite graphs, preprint
2. Partitioning a set;Bing;Bull. Amer. Math. Soc.,1949
3. Transformations continues en circonférence et la topologie du plan;Eilenberg;Fund. Math.,1936
4. A survey on unicoherence and related properties;García-Máynez;An. Inst. Mat. Univ. Nac. Autónoma México,1989
5. Algebraic Topology, A First Course;Greenberg,1981