@article{1077476584,
author = {Mandelbrojt, S. and Ulrich, F. E.},
title = {Regions of flatness for analytic functions and their
derivatives},
journal = {Duke Math. J.},
volume = {18},
number = {1},
year = {1951},
pages = { 549-556},
language = {en},
url = {http://dml.mathdoc.fr/item/1077476584}
}
Mandelbrojt, S.; Ulrich, F. E. Regions of flatness for analytic functions and their
derivatives. Duke Math. J., Tome 18 (1951) no. 1, pp. 549-556. http://gdmltest.u-ga.fr/item/1077476584/