@article{1183502436, author = {Goldstine, Herman H.}, title = {Minimum problems in the functional calculus}, journal = {Bull. Amer. Math. Soc.}, volume = {46}, number = {11}, year = {1940}, pages = { 142-149}, language = {en}, url = {http://dml.mathdoc.fr/item/1183502436} }
Goldstine, Herman H. Minimum problems in the functional calculus. Bull. Amer. Math. Soc., Tome 46 (1940) no. 11, pp. 142-149. http://gdmltest.u-ga.fr/item/1183502436/