@article{MZM_1991_49_3_a11,
     author = {E. V. Radkevich},
     title = {Spectrum of the pencil of the {Verigin--Macket} problem},
     journal = {Matemati\v{c}eskie zametki},
     pages = {77--90},
     publisher = {mathdoc},
     volume = {49},
     number = {3},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1991_49_3_a11/}
}