@article{1077465182,
author = {Bradford, W. H.},
title = {Sub-biharmonic functions},
journal = {Duke Math. J.},
volume = {20},
number = {1},
year = {1953},
pages = { 173-176},
language = {en},
url = {http://dml.mathdoc.fr/item/1077465182}
}
Bradford, W. H. Sub-biharmonic functions. Duke Math. J., Tome 20 (1953) no. 1, pp. 173-176. http://gdmltest.u-ga.fr/item/1077465182/