@article{1077489217,
author = {Whitney, Hassler},
title = {A function not constant on a connected set of critical points},
journal = {Duke Math. J.},
volume = {1},
number = {1},
year = {1935},
pages = { 514-517},
language = {en},
url = {http://dml.mathdoc.fr/item/1077489217}
}
Whitney, Hassler. A function not constant on a connected set of critical points. Duke Math. J., Tome 1 (1935) no. 1, pp. 514-517. http://gdmltest.u-ga.fr/item/1077489217/