@article{UZERU_2008_2_a12,
     author = {V. Zh. Dumanyan},
     title = {On the estimation of $\int|\nabla u|^2dx$ for solutions of second order elliptic equations},
     journal = {Proceedings of the Yerevan State University. Physical and mathematical sciences},
     pages = {145--147},
     publisher = {mathdoc},
     number = {2},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/UZERU_2008_2_a12/}
}