%0 Journal Article
%A I. S. Kats
%T A~description of the set of spectral functions of a~regular string supporting a~concentrated mass at an end that is free of boundary conditions
%J Izvestiâ vysših učebnyh zavedenij. Matematika
%D 1974
%P 27-33
%N 7
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IVM_1974_7_a3/
%G ru
%F IVM_1974_7_a3