@article{DE_2002_38_4_a8,
     author = {V. N. Pavlenko and O. V. Ul'yanova},
     title = {Method of {Upper} and {Lower} {Solutions} for {Parabolic-Type} {Equations} with {Discontinuous} {Nonlinearities}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {499--504},
     publisher = {mathdoc},
     volume = {38},
     number = {4},
     year = {2002},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2002_38_4_a8/}
}