@article{JLT_2004_14_2_JLT_2004_14_2_a12,
     author = {J. Winkelmann},
     title = {A {Splitting} {Criterion} for {Two-Dimensional} {Semi-Tori}},
     journal = {Journal of Lie theory},
     pages = {555--561},
     publisher = {mathdoc},
     volume = {14},
     number = {2},
     year = {2004},
     url = {http://geodesic.mathdoc.fr/item/JLT_2004_14_2_JLT_2004_14_2_a12/}
}