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-rw-r--r--src/ParallelBeamStripKernelProjector2D.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/ParallelBeamStripKernelProjector2D.cpp b/src/ParallelBeamStripKernelProjector2D.cpp
index 3f4e7f3..a2869e2 100644
--- a/src/ParallelBeamStripKernelProjector2D.cpp
+++ b/src/ParallelBeamStripKernelProjector2D.cpp
@@ -29,6 +29,7 @@ $Id$
#include "astra/ParallelBeamStripKernelProjector2D.h"
#include <cmath>
+#include <algorithm>
#include "astra/DataProjectorPolicies.h"