--- /dev/null
+#ifndef ALIFLATESDV0_H
+#define ALIFLATESDV0_H
+
+/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
+ * See cxx source for full Copyright notice *
+ * Primary Authors : Sergey Gorbunov, Jochen Thaeder, Chiara Zampolli */
+
+/**
+ * >> Flat structure representing a ESD vertex <<
+ */
+
+#include "Rtypes.h"
+
+struct AliFlatESDV0
+{
+ Int_t fNegTrackID;
+ Int_t fPosTrackID;
+};
+
+typedef struct AliFlatESDV0 AliFlatESDV0;
+
+#endif