@article{AA_2015_27_3_a10,
     author = {M. V. Safonov},
     title = {Narrow domains and the {Harnack} inequality for elliptic equations},
     journal = {Algebra i analiz},
     pages = {220--237},
     publisher = {mathdoc},
     volume = {27},
     number = {3},
     year = {2015},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AA_2015_27_3_a10/}
}