@article{1240434486, author = {R. EMBRY, Mary}, title = {Orthogonality and the numerical range}, journal = {J. Math. Soc. Japan}, volume = {27}, number = {4}, year = {1975}, pages = { 405-411}, language = {en}, url = {http://dml.mathdoc.fr/item/1240434486} }
R. EMBRY, Mary. Orthogonality and the numerical range. J. Math. Soc. Japan, Tome 27 (1975) no. 4, pp. 405-411. http://gdmltest.u-ga.fr/item/1240434486/