@article{RM_1967_22_3_a6,
     author = {A. G. Aslanyan},
     title = {The monotonicity of the first eigenvalue of non-self-adjoint problem and as the domain expands},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     publisher = {mathdoc},
     volume = {22},
     number = {3},
     year = {1967},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1967_22_3_a6/}
}