%0 Journal Article %A D. K. Potapov %T On a number of solutions in problems with spectral parameter for equations with discontinuous operators %J Ufa mathematical journal %D 2013 %P 56-62 %V 5 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/UFA_2013_5_2_a5/ %G en %F UFA_2013_5_2_a5