@article{1077493522,
author = {Boas, Mary L. and Boas, Jr., R. P. and Levinson, Norman},
title = {The growth of solutions of a differential equation},
journal = {Duke Math. J.},
volume = {9},
number = {1},
year = {1942},
pages = { 847-853},
language = {en},
url = {http://dml.mathdoc.fr/item/1077493522}
}
Boas, Mary L.; Boas, Jr., R. P.; Levinson, Norman. The growth of solutions of a differential equation. Duke Math. J., Tome 9 (1942) no. 1, pp. 847-853. http://gdmltest.u-ga.fr/item/1077493522/