%0 Journal Article %A Yu. K. Dem'yanovich %A L. M. Romanovskiǐ %T Spline-wavelet coarsening of Courant-type approximations %J Zapiski Nauchnykh Seminarov POMI %D 2013 %P 77-110 %V 419 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_2013_419_a5/ %G ru %F ZNSL_2013_419_a5