@article{1256064230,
author = {Fabes, Eugene B. and Garofalo, Nicola and Salsa, Sandro},
title = {A backward Harnack inequality and Fatou theorem for nonnegative solutions of parabolic equations},
journal = {Illinois J. Math.},
volume = {30},
number = {3},
year = {1986},
pages = { 536-565},
language = {en},
url = {http://dml.mathdoc.fr/item/1256064230}
}
Fabes, Eugene B.; Garofalo, Nicola; Salsa, Sandro. A backward Harnack inequality and Fatou theorem for nonnegative solutions of parabolic equations. Illinois J. Math., Tome 30 (1986) no. 3, pp. 536-565. http://gdmltest.u-ga.fr/item/1256064230/