@article{IM2_2007_71_1_a2,
     author = {A. A. Kon'kov},
     title = {The behaviour of solutions of elliptic inequalities that are non-linear with respect to the highest derivatives},
     journal = {Izvestiya. Mathematics },
     pages = {15--51},
     publisher = {mathdoc},
     volume = {71},
     number = {1},
     year = {2007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2007_71_1_a2/}
}