@article{1077491075,
author = {Coburn, Nathaniel},
title = {Surfaces in four-space of constant curvature},
journal = {Duke Math. J.},
volume = {5},
number = {1},
year = {1939},
pages = { 30-38},
language = {en},
url = {http://dml.mathdoc.fr/item/1077491075}
}
Coburn, Nathaniel. Surfaces in four-space of constant curvature. Duke Math. J., Tome 5 (1939) no. 1, pp. 30-38. http://gdmltest.u-ga.fr/item/1077491075/