@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/