%0 Journal Article %A Stoyanov, Luchezar %T Spectra of Ruelle Transfer Operators for Contact Flows %J Serdica Mathematical Journal %D 2008 %P 219-252 %V 34 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/SMJ2_2008_34_1_a8/ %G en %F SMJ2_2008_34_1_a8