%0 Journal Article %A E. V. Radkevich %T On the spectrum of the pencil in the Verigin–Muskat problem %J Sbornik. Mathematics %D 1995 %P 33-73 %V 80 %N 1 %U http://geodesic.mathdoc.fr/item/SM_1995_80_1_a2/ %G en %F SM_1995_80_1_a2