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diff --git a/src/functors/lattice/integral/blockLpNorm2D.h b/src/functors/lattice/integral/blockLpNorm2D.h
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+++ b/src/functors/lattice/integral/blockLpNorm2D.h
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+/*  This file is part of the OpenLB library
+ *
+ *  Copyright (C) 2017 Adrian Kummerlaender
+ *  E-mail contact: info@openlb.net
+ *  The most recent release of OpenLB can be downloaded at
+ *  <http://www.openlb.net/>
+ *
+ *  This program 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.
+ *
+ *  This program 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 this program; if not, write to the Free
+ *  Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ *  Boston, MA  02110-1301, USA.
+*/
+
+#ifndef BLOCK_LP_NORM_2D_H
+#define BLOCK_LP_NORM_2D_H
+
+namespace olb {
+
+template<typename T> class BlockF2D;
+template<typename T> class Cuboid2D;
+template<typename T> class BlockIndicatorF2D;
+
+/// Block level functor that returns the Lp norm over omega of the euklid norm of the input block functor.
+/**
+ * Instances are contained in SuperLpNorm2D::_blockF.
+ **/
+template <typename T, typename W, int P>
+class BlockLpNorm2D final : public BlockF2D<W> {
+protected:
+  BlockF2D<W>&          _f;
+  BlockIndicatorF2D<T>& _indicatorF;
+public:
+  /**
+   * \param f          data functor
+   * \param indicatorF indicator functor describing the subset to be integrated
+   **/
+  BlockLpNorm2D(BlockF2D<W>& f, BlockIndicatorF2D<T>& indicatorF);
+  bool operator() (W output[], const int input[]) override;
+};
+
+}
+
+#endif