%0 Journal Article %A I. S. Kats %T Theorems of the connection between the behavior of $R$-functions and the behavior of their spectral functions %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1981 %P 15-20 %N 11 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1981_11_a2/ %G ru %F IVM_1981_11_a2