%0 Journal Article %A Makai, Mihály %A Orechwa, Yuri %T Solutions of boundary-value problems in discretized volumes %J Electronic journal of differential equations %D 2002 %V 2002 %U http://geodesic.mathdoc.fr/item/EJDE_2002__2002__a274/ %G en %F EJDE_2002__2002__a274