@article{1077472803,
author = {Blumberg, Henry},
title = {Arbitrary point transformations},
journal = {Duke Math. J.},
volume = {11},
number = {1},
year = {1944},
pages = { 671-685},
language = {en},
url = {http://dml.mathdoc.fr/item/1077472803}
}
Blumberg, Henry. Arbitrary point transformations. Duke Math. J., Tome 11 (1944) no. 1, pp. 671-685. http://gdmltest.u-ga.fr/item/1077472803/