%0 Journal Article %A A. Biggs %A H. M. Khudaverdian %T Operator pencils on the algebra of densities %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 2014 %P 40-64 %V 286 %I mathdoc %U http://geodesic.mathdoc.fr/item/TM_2014_286_a2/ %G ru %F TM_2014_286_a2