@article{DE_1968_4_1_a9,
     author = {L. P. Kuptsov},
     title = {Harnack's inequality for generalized solutions of second order degenerate elliptic equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {110--122},
     publisher = {mathdoc},
     volume = {4},
     number = {1},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1968_4_1_a9/}
}