@article{GDZPPN002405741,
title = {Homotopy Functors Determined by Set-Valued Maps.},
journal = {Mathematische Zeitschrift},
volume = {114},
year = {1970},
pages = {154-158},
zbl = {0183.28001},
url = {http://dml.mathdoc.fr/item/GDZPPN002405741}
}
Rhee, Choon Jai. Homotopy Functors Determined by Set-Valued Maps.. Mathematische Zeitschrift, Tome 114 (1970) pp. 154-158. http://gdmltest.u-ga.fr/item/GDZPPN002405741/