@article{105738,
author = {P\'al Erd\"os and David Preiss},
title = {Decomposition of spheres in Hilbert spaces},
journal = {Commentationes Mathematicae Universitatis Carolinae},
volume = {017},
year = {1976},
pages = {791-795},
zbl = {0346.05106},
mrnumber = {0480140},
language = {en},
url = {http://dml.mathdoc.fr/item/105738}
}
Erdös, Pál; Preiss, David. Decomposition of spheres in Hilbert spaces. Commentationes Mathematicae Universitatis Carolinae, Tome 017 (1976) pp. 791-795. http://gdmltest.u-ga.fr/item/105738/
On chromatic number of graphs and set-systems, Acta Math. Acad. Sci. Hung. 17 (1966), 61-99. (1966) | MR 0193025