@article{1028999137, author = {Douglas, R. G.}, title = {On extremal measures and subspace density.}, journal = {Michigan Math. J.}, volume = {11}, number = {1}, year = {1964}, pages = { 243-246}, language = {en}, url = {http://dml.mathdoc.fr/item/1028999137} }
Douglas, R. G. On extremal measures and subspace density.. Michigan Math. J., Tome 11 (1964) no. 1, pp. 243-246. http://gdmltest.u-ga.fr/item/1028999137/