@article{700966,
title = {Connexions between convexity of a metric continuum $X$ and convexity of its hyperspaces $C(X)$ and $2^X$
},
booktitle = {General Topology and its Relations to Modern Analysis and Algebra},
series = {GDML\_Books},
publisher = {Academia Publishing House of the Czechoslovak Academy of Sciences},
address = {Praha},
year = {1962},
pages = {142-145},
mrnumber = {MR0174035},
zbl = {0178.25904},
url = {http://dml.mathdoc.fr/item/700966}
}
Duda, R. Connexions between convexity of a metric continuum $X$ and convexity of its hyperspaces $C(X)$ and $2^X$
, dans General Topology and its Relations to Modern Analysis and Algebra, GDML_Books, (1962), pp. 142-145. http://gdmltest.u-ga.fr/item/700966/