/* alle Kinder des aktuellen DocStructs durchlaufen */
this.myDocStruct.getAllReferences("to").removeAll(this.myDocStruct.getAllReferences("to"));
if (this.myDocStruct.getAllChildren() != null) {
for (Iterator<DocStruct> iter = this.myDocStruct.getAllChildren().iterator(); iter.hasNext();) {
DocStruct child = iter.next();
List<Reference> childRefs = child.getAllReferences("to");
for (Reference toAdd : childRefs) {
boolean match = false;
for (Reference ref : this.myDocStruct.getAllReferences("to")) {
if (ref.getTarget().equals(toAdd.getTarget())) {
match = true;