@article{UZERU_2009_1_a1,
     author = {R. R. Teymurazyan},
     title = {Two side estimates for the double obstacle problem},
     journal = {Proceedings of the Yerevan State University. Physical and mathematical sciences},
     pages = {8--15},
     publisher = {mathdoc},
     number = {1},
     year = {2009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/UZERU_2009_1_a1/}
}