@article{AA_2002_14_1_a0,
     author = {D. E. Apushkinskaya and N. N. Ural'tseva and H. Shahgholian},
     title = {On the global solutions of the parabolic obstacle problem},
     journal = {Algebra i analiz},
     pages = {3--25},
     publisher = {mathdoc},
     volume = {14},
     number = {1},
     year = {2002},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_2002_14_1_a0/}
}