--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/artifacts/src/main/java/org/dive4elements/river/artifacts/bundu/bezugswst/BezugswstCalculation.java	Thu Jul 26 15:58:08 2018 +0200
@@ -0,0 +1,65 @@
+/* Copyright (C) 2017 by Bundesanstalt für Gewässerkunde
+ * Software engineering by
+ *  Björnsen Beratende Ingenieure GmbH
+ *  Dr. Schumacher Ingenieurbüro für Wasser und Umwelt
+ *
+ * This file is Free Software under the GNU AGPL (>=v3)
+ * and comes with ABSOLUTELY NO WARRANTY! Check out the
+ * documentation coming with Dive4Elements River for details.
+ */
+package org.dive4elements.river.artifacts.bundu.bezugswst;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.dive4elements.artifacts.CallContext;
+import org.dive4elements.river.artifacts.bundu.BUNDUArtifact;
+import org.dive4elements.river.artifacts.common.GeneralResultType;
+import org.dive4elements.river.artifacts.common.ResultRow;
+import org.dive4elements.river.artifacts.model.CalculationResult;
+import org.dive4elements.river.artifacts.resources.Resources;
+import org.dive4elements.river.artifacts.sinfo.util.CalculationUtils;
+import org.dive4elements.river.artifacts.sinfo.util.RiverInfo;
+import org.dive4elements.river.model.River;
+
+class BezugswstCalculation {
+
+    // private static Logger log = Logger.getLogger(FloodDurationCalculation.class);
+
+    private final CallContext context;
+
+    public BezugswstCalculation(final CallContext context) {
+        this.context = context;
+    }
+
+    public CalculationResult calculate(final BUNDUArtifact bunduartifact) {
+
+        final String user = CalculationUtils.findArtifactUser(this.context, bunduartifact);
+
+        /* access input data */
+        final BunduAccess access = new BunduAccess(bunduartifact);
+
+        final River river = access.getRiver();
+        final RiverInfo riverInfo = new RiverInfo(river);
+        final String calcModeLabel = Resources.getMsg(this.context.getMeta(), "bundu_bezugswst");
+        final BezugswstCalculationResults results = new BezugswstCalculationResults(calcModeLabel, user, riverInfo, access.getRange());
+
+        final List<ResultRow> list = new ArrayList<>();
+        final ResultRow row = ResultRow.create();
+        row.putValue(GeneralResultType.station, 666.666);
+        row.putValue(GeneralResultType.dischargeQwithUnit, 77.666);
+        row.putValue(GeneralResultType.location, "Tescht");
+        list.add(row);
+
+        final BezugswstCalculationResult result = new BezugswstCalculationResult("label? was fürn label?", list);
+        results.addResult(result, null);
+        return new CalculationResult(results, null);// problems);
+    }
+
+    /**
+     * Calculates one W-MSH differences pair.
+     *
+     * @param infoProvider
+     */
+
+}
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