@article{JOLT_1997_7_2_a8,
     author = {M. Wuestner},
     title = { On {Closed} {Abelian} {Subgroups} of {Real} {Lie} {Groups}},
     journal = {Journal of Lie Theory},
     pages = {279--286},
     year = {1997},
     volume = {7},
     number = {2},
     zbl = {0879.22003},
     url = {http://geodesic.mathdoc.fr/item/JOLT_1997_7_2_a8/}
}