@article{1077491418,
author = {Whyburn, G. T.},
title = {The existence of certain transformations},
journal = {Duke Math. J.},
volume = {5},
number = {1},
year = {1939},
pages = { 647-655},
language = {en},
url = {http://dml.mathdoc.fr/item/1077491418}
}
Whyburn, G. T. The existence of certain transformations. Duke Math. J., Tome 5 (1939) no. 1, pp. 647-655. http://gdmltest.u-ga.fr/item/1077491418/