@article{GDZPPN002183250, title = {Structure theory for operators. I.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, volume = {229}, year = {1968}, pages = {180-193}, zbl = {0164.44301}, url = {http://dml.mathdoc.fr/item/GDZPPN002183250} }
Douglas, R.G. Structure theory for operators. I.. Journal für die reine und angewandte Mathematik, Tome 229 (1968) pp. 180-193. http://gdmltest.u-ga.fr/item/GDZPPN002183250/