@article{1077473374,
author = {Whyburn, G. T.},
title = {Boundary alternation of monotone mappings},
journal = {Duke Math. J.},
volume = {12},
number = {1},
year = {1945},
pages = { 663-667},
language = {en},
url = {http://dml.mathdoc.fr/item/1077473374}
}
Whyburn, G. T. Boundary alternation of monotone mappings. Duke Math. J., Tome 12 (1945) no. 1, pp. 663-667. http://gdmltest.u-ga.fr/item/1077473374/