@article{ARM_2009__45_1_a1,
     author = {Tersenov, Aris S.},
     title = {Viscosity subsolutions and supersolutions for non-uniformly and degenerate elliptic equations},
     journal = {Archivum mathematicum},
     pages = {19--35},
     publisher = {mathdoc},
     volume = {45},
     number = {1},
     year = {2009},
     mrnumber = {2591658},
     zbl = {1212.35134},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_2009__45_1_a1/}
}