%0 Journal Article
%A M. A. Zaretskaya
%T The character of the spectrum of quadratic quantum Hamiltonians
%J Izvestiâ vysših učebnyh zavedenij. Matematika
%D 1985
%P 68-69
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IVM_1985_5_a12/
%G ru
%F IVM_1985_5_a12