@article{DE_1970_6_1_a14,
     author = {L. P. Kuptsov},
     title = {The {Harnack} inequality for generalized solutions of second order nonlinear $(k,\,0)$-elliptic equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {147--156},
     publisher = {mathdoc},
     volume = {6},
     number = {1},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1970_6_1_a14/}
}