@article{GDZPPN002211432, title = {Polar and Ol'shanskii decompositions.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, volume = {450}, year = {1994}, pages = {191-219}, zbl = {0786.22012}, url = {http://dml.mathdoc.fr/item/GDZPPN002211432} }
Lawson, Jimmie D. Polar and Ol'shanskii decompositions.. Journal für die reine und angewandte Mathematik, Tome 450 (1994) pp. 191-219. http://gdmltest.u-ga.fr/item/GDZPPN002211432/