@article{05237138, title = {Harnack inequalities: an introduction.}, journal = {Boundary Value Problems [electronic only]}, volume = {2007}, year = {2007}, doi = {10.1155/2007/81415}, zbl = {1144.35002}, language = {en}, url = {http://dml.mathdoc.fr/item/05237138} }
Kassmann, Moritz. Harnack inequalities: an introduction.. Boundary Value Problems [electronic only], Tome 2007 (2007) . doi : 10.1155/2007/81415. http://gdmltest.u-ga.fr/item/05237138/