diff --git a/journals/forms.py b/journals/forms.py
index fcf4a92ee631e238247104a4cc3c29ea1719a73e..12ec2553258242d43497e4b735ba05d325ccb7ad 100644
--- a/journals/forms.py
+++ b/journals/forms.py
@@ -93,6 +93,8 @@ class BaseReferenceFormSet(BaseModelFormSet):
 
     def __init__(self, *args, **kwargs):
         self.publication = kwargs.pop('publication')
+        extra = kwargs.pop('extra')
+        self.extra = int(extra if extra else '0')
         kwargs['form_kwargs'] = {'publication': self.publication}
         super().__init__(*args, **kwargs)
 
@@ -146,7 +148,7 @@ class BaseReferenceFormSet(BaseModelFormSet):
             self.initial_extra = self.initial_references
         else:
             self.initial_extra.extend(self.initial_references)
-        self.extra = len(self.initial_extra)
+        self.extra += len(self.initial_extra)
 
 
 class ReferenceForm(forms.ModelForm):
diff --git a/journals/templates/journals/update_references.html b/journals/templates/journals/update_references.html
index 2c518c321ceeb417bdea231c4f8bd1aa0963d0b4..9d490a4cd1f65184a80d0444f2289ac784daf386 100644
--- a/journals/templates/journals/update_references.html
+++ b/journals/templates/journals/update_references.html
@@ -4,11 +4,39 @@
 
 {% block pagetitle %}: Update References{% endblock pagetitle %}
 
+{% block breadcrumb %}
+    <div class="container-outside header">
+        <div class="container">
+            <nav class="breadcrumb hidden-sm-down">
+                <a href="{{publication.get_absolute_url}}" class="breadcrumb-item">{{publication.citation}}</a>
+                <span class="breadcrumb-item active">Update References</span>
+            </nav>
+        </div>
+    </div>
+{% endblock %}
+
 {% block content %}
 
 <h1>Update References</h1>
 
-<a href="{% url 'journals:update_references' publication.doi_label %}?prefill=form">Prefill forms (this might take a minute)</a>
+<form action="{% url 'journals:update_references' publication.doi_label %}" method="get" class="mb-4">
+
+    <div class="form-group row">
+            <label class="col-form-label col-md-4 text-right" for="id_email">Number of additional empty references</label>
+            <div class="col-md-8">
+                <input class="form-control" name="extra" type="number" value="{{ request.GET.extra|default:'0' }}">
+            </div>
+    </div>
+    <div class="ml-auto col-md-8 multiple-checkbox">
+        <label for="prefiller_checkbox">
+            <input type="checkbox" name="prefill" value="form" id="prefiller_checkbox">
+            Prefill form with Crossref data (this might take a minute)
+        </label>
+    </div>
+    <input type="submit" class="btn btn-primary" value="Refresh">
+</form>
+
+<hr>
 
 <form action="{% url 'journals:update_references' publication.doi_label %}" method="post" enctype="multipart/form-data">
     {% csrf_token %}
diff --git a/journals/views.py b/journals/views.py
index af3410f00b0ea9e6efe3caf502f93a8bfc766da3..37ee5003c99fb32ea56d4288ec4061042e55e98a 100644
--- a/journals/views.py
+++ b/journals/views.py
@@ -455,7 +455,9 @@ def update_references(request, doi_label):
     """
     publication = get_object_or_404(Publication, doi_label=doi_label)
     references = publication.references.all()
-    formset = ReferenceFormSet(request.POST or None, queryset=references, publication=publication)
+
+    formset = ReferenceFormSet(request.POST or None, queryset=references, publication=publication,
+                               extra=request.GET.get('extra'))
 
     if request.GET.get('prefill'):
         formset.prefill()