@article{1028997960,
author = {Bagemihl, F.},
title = {On power series, area, and length.},
journal = {Michigan Math. J.},
volume = {4},
number = {2},
year = {1957},
pages = { 281-283},
language = {en},
url = {http://dml.mathdoc.fr/item/1028997960}
}
Bagemihl, F. On power series, area, and length.. Michigan Math. J., Tome 4 (1957) no. 2, pp. 281-283. http://gdmltest.u-ga.fr/item/1028997960/