--- /dev/null
+function Dnodes=Unodesonside(mesh,Dsides);
+
+% Dnodes=Unodesonside(mesh,Dsides);
+
+% This file is part of
+%
+% SECS2D - A 2-D Drift--Diffusion Semiconductor Device Simulator
+% -------------------------------------------------------------------
+% Copyright (C) 2004-2006 Carlo de Falco
+%
+%
+%
+% SECS2D is free software; you can redistribute it and/or modify
+% it under the terms of the GNU General Public License as published by
+% the Free Software Foundation; either version 2 of the License, or
+% (at your option) any later version.
+%
+% SECS2D is distributed in the hope that it will be useful,
+% but WITHOUT ANY WARRANTY; without even the implied warranty of
+% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+% GNU General Public License for more details.
+%
+% You should have received a copy of the GNU General Public License
+% along with SECS2D; If not, see <http://www.gnu.org/licenses/>.
+
+
+Dedges =[];
+
+for ii = 1:length(Dsides)
+ Dedges=[Dedges,find(mesh.e(5,:)==Dsides(ii))];
+end
+
+% Set list of nodes with Dirichelet BCs
+Dnodes = mesh.e(1:2,Dedges);
+Dnodes = [Dnodes(1,:) Dnodes(2,:)];
+Dnodes = unique(Dnodes);
+