The classification of all simple Lie groups with surjective exponential map. Wüstner, Michael — 2005 Journal of Lie Theory
A connected complex simple centerfree Lie group whose exponential function is not surjective. Wüstner, Michael — 1995 Journal of Lie Theory
On the exponential function of real splittable and real semisimple Lie groups. Wüstner, Michael — 1998 Beiträge zur Algebra und Geometrie
Exponential Lie groups with disconnected near Cartan subgroups. Wüstner, Michael — 1998 Journal of Lie Theory
A connected Lie group equals the square of the exponential image. Wüstner, Michael — 2003 Journal of Lie Theory