@article{JLT_1991_1_2_a5,
     author = {J. D. Lawson},
     title = {Polar and {Ol'shanskii} {Decompositions}},
     journal = {Journal of Lie theory},
     pages = {163--174},
     publisher = {mathdoc},
     volume = {1},
     number = {2},
     year = {1991},
     url = {http://geodesic.mathdoc.fr/item/JLT_1991_1_2_a5/}
}