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-rw-r--r--src/Persistent_cohomology/example/weighted_periodic_alpha_complex_3d_persistence.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/Persistent_cohomology/example/weighted_periodic_alpha_complex_3d_persistence.cpp b/src/Persistent_cohomology/example/weighted_periodic_alpha_complex_3d_persistence.cpp
index 13634ff7..67d830dc 100644
--- a/src/Persistent_cohomology/example/weighted_periodic_alpha_complex_3d_persistence.cpp
+++ b/src/Persistent_cohomology/example/weighted_periodic_alpha_complex_3d_persistence.cpp
@@ -30,6 +30,8 @@
#include <CGAL/Periodic_3_regular_triangulation_traits_3.h>
#include <CGAL/Periodic_3_regular_triangulation_3.h>
#include <CGAL/Alpha_shape_3.h>
+#include <CGAL/Alpha_shape_vertex_base_3.h>
+#include <CGAL/Alpha_shape_cell_base_3.h>
#include <CGAL/iterator.h>
#include <fstream>