@article{2536,
author = {Doyle, P.H.},
title = {Neighborhood deformation retraction in manifolds},
journal = {Portugaliae mathematica},
volume = {26},
year = {1967},
pages = {273-274},
zbl = {0187.45301},
mrnumber = {0257997},
language = {en},
url = {http://dml.mathdoc.fr/item/2536}
}
Doyle, P.H. Neighborhood deformation retraction in manifolds. Portugaliae mathematica, Tome 26 (1967) pp. 273-274. http://gdmltest.u-ga.fr/item/2536/