@article{01873033, title = {A connected Lie group equals the square of the exponential image.}, journal = {Journal of Lie Theory}, volume = {13}, year = {2003}, pages = {307-309}, zbl = {1022.22005}, language = {en}, url = {http://dml.mathdoc.fr/item/01873033} }
Wüstner, Michael. A connected Lie group equals the square of the exponential image.. Journal of Lie Theory, Tome 13 (2003) pp. 307-309. http://gdmltest.u-ga.fr/item/01873033/