%0 Journal Article %A A. Ellanskaya %A L. Vostrikova %T Utility maximisation and utility indifference price for exponential semi-martingale models and HARA utilities %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 2014 %P 75-102 %V 287 %I mathdoc %U http://geodesic.mathdoc.fr/item/TM_2014_287_a4/ %G en %F TM_2014_287_a4