@article{VMUMM_1985_4_a6,
     author = {Yu. V. Egorov and V. A. Kondratiev},
     title = {Some bounds for eigenfunctions of an elliptic operator},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {32--34},
     publisher = {mathdoc},
     number = {4},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1985_4_a6/}
}