@article{1102992702,
author = {Sweeney, W. J.},
title = {``The $\delta $-Poincar\'e estimate''.},
journal = {Pacific J. Math.},
volume = {23},
number = {3},
year = {1967},
pages = { 559-570},
language = {en},
url = {http://dml.mathdoc.fr/item/1102992702}
}
Sweeney, W. J. ``The $\delta $-Poincaré estimate''.. Pacific J. Math., Tome 23 (1967) no. 3, pp. 559-570. http://gdmltest.u-ga.fr/item/1102992702/