@article{PA_2005_12_a3,
     author = {A. Prusi\'nska and A. A. Tret'yakov},
     title = {The theorem on existence of singular solutions to nonlinear equations},
     journal = {Problemy analiza},
     pages = {22--36},
     publisher = {mathdoc},
     number = {12},
     year = {2005},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PA_2005_12_a3/}
}