@article{1103038081, author = {Rosenblum, Marvin and Widom, Harold}, title = {Two extremal problems.}, journal = {Pacific J. Math.}, volume = {10}, number = {4}, year = {1960}, pages = { 1409-1418}, language = {en}, url = {http://dml.mathdoc.fr/item/1103038081} }
Rosenblum, Marvin; Widom, Harold. Two extremal problems.. Pacific J. Math., Tome 10 (1960) no. 4, pp. 1409-1418. http://gdmltest.u-ga.fr/item/1103038081/