@article{10_1090_S0894_0347_09_00653_5,
     author = {Bertrand, Daniel and Pillay, Anand},
     title = {A {Lindemann-Weierstrass} theorem for semi-abelian varieties over function fields},
     journal = {Journal of the American Mathematical Society},
     pages = {491--533},
     year = {2010},
     volume = {23},
     number = {2},
     doi = {10.1090/S0894-0347-09-00653-5},
     url = {http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-09-00653-5/}
}