@article{VMUMM_1986_2_a21,
     author = {A. M. Lopatnikov},
     title = {Some estimates of the least eigenvalue for an elliptic operator in a multiply connected domain},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {95--97},
     publisher = {mathdoc},
     number = {2},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1986_2_a21/}
}