%0 Journal Article %A N. Vavilov %A A. Luzgarev %A A. Stepanov %T Calculations in exceptional groups over rings %J Zapiski Nauchnykh Seminarov POMI %D 2009 %P 48-72 %V 373 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_2009_373_a2/ %G en %F ZNSL_2009_373_a2