@article{GDZPPN002443090,
title = {Harnack's inequality for parabolic operators with singular low order terms.},
journal = {Mathematische Zeitschrift},
volume = {217},
year = {1994},
pages = {593-612},
zbl = {0808.35044},
url = {http://dml.mathdoc.fr/item/GDZPPN002443090}
}
Sturm, Karl-Theodor. Harnack's inequality for parabolic operators with singular low order terms.. Mathematische Zeitschrift, Tome 217 (1994) pp. 593-612. http://gdmltest.u-ga.fr/item/GDZPPN002443090/