diff --git a/cronjob_production_daily.sh b/cronjob_production_daily.sh
old mode 100644
new mode 100755
diff --git a/cronjob_production_eachminute.sh b/cronjob_production_eachminute.sh
old mode 100644
new mode 100755
diff --git a/cronjob_production_weekly.sh b/cronjob_production_weekly.sh
old mode 100644
new mode 100755
diff --git a/journals/migrations/0029_auto_20180519_1658.py b/journals/migrations/0029_auto_20180519_1658.py
new file mode 100644
index 0000000000000000000000000000000000000000..40185daf418e22f6f7db1b78c895e97c9b7876fb
--- /dev/null
+++ b/journals/migrations/0029_auto_20180519_1658.py
@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.4 on 2018-05-19 14:58
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('journals', '0028_publication_number_of_citations'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='publication',
+            name='number_of_citations',
+            field=models.PositiveIntegerField(default=0),
+        ),
+    ]
diff --git a/journals/models.py b/journals/models.py
index 8f5979ee973c179db96b328a1c403f48bab551b8..58b2c06d9c1537aece5d65182f2c784c663e7006 100644
--- a/journals/models.py
+++ b/journals/models.py
@@ -397,7 +397,7 @@ class Publication(models.Model):
     BiBTeX_entry = models.TextField(blank=True)
     doideposit_needs_updating = models.BooleanField(default=False)
     citedby = JSONField(default={}, blank=True, null=True)
-    number_of_citations = models.PositiveIntegerField()
+    number_of_citations = models.PositiveIntegerField(default=0)
 
     # Date fields
     submission_date = models.DateField(verbose_name='submission date')
diff --git a/templates/email/referees/invite_contributor_to_referee.html b/templates/email/referees/invite_contributor_to_referee.html
index c4eb852a1d39c1b3dfdace341ca15e544b01eac4..cddb2dafe388fb3f4f463d4985e3e6bd76530e3c 100644
--- a/templates/email/referees/invite_contributor_to_referee.html
+++ b/templates/email/referees/invite_contributor_to_referee.html
@@ -15,7 +15,7 @@
     If you accept, your report can be submitted by simply clicking on the "Contribute a Report" link on <a href="https://scipost.org{{invitation.submission.get_absolute_url}}">the Submission Page</a> before the reporting deadline (currently set at {{invitation.submission.reporting_deadline|date:'d-m-Y'}}; your report will be automatically recognized as an invited report).
 </p>
 <p>
-    You might want to make sure you are familiar with our refereeing <a href="https://scipost.org/journals/journals_terms_and_conditions">code of conduct</a>, <a href="{% url 'submissions:referee_guidelines' %}">referee guidelines</a> and with <a href="https://scipost.org/submissions/sub_and_ref_procedure">the refereeing procedure</a>.
+    You might want to make sure you are familiar with our <a href="https://scipost.org{% url 'submissions:sub_and_ref_procedure' %}">refereeing procedure</a>, <a href="https://scipost.org{% url 'submissions:referee_guidelines' %}">referee guidelines</a> and <a href="https://scipost.org{% url 'journals:journals_terms_and_conditions' %}#referee_code_of_conduct">referee code of conduct</a>.
 </p>
 <p>
     We would be extremely grateful for your contribution, and thank you in advance for your consideration.
diff --git a/templates/email/referees/invite_contributor_to_referee_reminder1.html b/templates/email/referees/invite_contributor_to_referee_reminder1.html
index e4c98c856c79db5702fe445f134cc051169b14b3..bc2d7809fa92ab650a597487bd7aea329ddea92b 100644
--- a/templates/email/referees/invite_contributor_to_referee_reminder1.html
+++ b/templates/email/referees/invite_contributor_to_referee_reminder1.html
@@ -20,7 +20,7 @@
     If you accept, your report can be submitted by simply clicking on the "Contribute a Report" link on <a href="https://scipost.org{{invitation.submission.get_absolute_url}}">the Submission Page</a> before the reporting deadline (currently set at {{invitation.submission.reporting_deadline|date:'d M Y'}}; your report will be automatically recognized as an invited report).
 </p>
 <p>
-    You might want to make sure you are familiar with our <a href="{% url 'submissions:sub_and_ref_procedure' %}">refereeing procedure</a>, <a href="{% url 'submissions:referee_guidelines' %}">referee guidelines</a> and <a href="{% url 'journals:journals_terms_and_conditions' %}#referee_code_of_conduct">referee code of conduct</a>.
+    You might want to make sure you are familiar with our <a href="https://scipost.org{% url 'submissions:sub_and_ref_procedure' %}">refereeing procedure</a>, <a href="https://scipost.org{% url 'submissions:referee_guidelines' %}">referee guidelines</a> and <a href="https://scipost.org{% url 'journals:journals_terms_and_conditions' %}#referee_code_of_conduct">referee code of conduct</a>.
 </p>
 <p>
     We would be extremely grateful for your contribution, and thank you in advance for your consideration.
diff --git a/templates/email/referees/invite_contributor_to_referee_reminder2.html b/templates/email/referees/invite_contributor_to_referee_reminder2.html
index d534cdf838fee53681432acc492a18ec7a0e756d..6623646302f15ec1dd71e6f8eaec63d29c4e84df 100644
--- a/templates/email/referees/invite_contributor_to_referee_reminder2.html
+++ b/templates/email/referees/invite_contributor_to_referee_reminder2.html
@@ -20,7 +20,7 @@
     If you accept, your report can be submitted by simply clicking on the "Contribute a Report" link on <a href="https://scipost.org{{invitation.submission.get_absolute_url}}">the Submission Page</a> before the reporting deadline (currently set at {{invitation.submission.reporting_deadline|date:'d M Y'}}; your report will be automatically recognized as an invited report).
 </p>
 <p>
-    You might want to make sure you are familiar with our <a href="{% url 'submissions:sub_and_ref_procedure' %}">refereeing procedure</a>, <a href="{% url 'submissions:referee_guidelines' %}">referee guidelines</a> and <a href="{% url 'journals:journals_terms_and_conditions' %}#referee_code_of_conduct">referee code of conduct</a>.
+    You might want to make sure you are familiar with our <a href="https://scipost.org{% url 'submissions:sub_and_ref_procedure' %}">refereeing procedure</a>, <a href="https://scipost.org{% url 'submissions:referee_guidelines' %}">referee guidelines</a> and <a href="https://scipost.org{% url 'journals:journals_terms_and_conditions' %}#referee_code_of_conduct">referee code of conduct</a>.
 </p>
 <p>
     We would be extremely grateful for your contribution, and thank you in advance for your consideration.
diff --git a/templates/email/referees/invite_unregistered_to_referee.html b/templates/email/referees/invite_unregistered_to_referee.html
index 8977af17c8649624ff7ab4578eebc080e5537d63..cad3479466910922ee71e586130cd468cdd2f2fe 100644
--- a/templates/email/referees/invite_unregistered_to_referee.html
+++ b/templates/email/referees/invite_unregistered_to_referee.html
@@ -23,7 +23,7 @@ Dear {{ invitation.get_title_display }} {{ invitation.last_name }},
   After activation of your registration, you will be allowed to contribute, in particular by providing referee reports.
 </p>
 <p>
-    You might want to make sure you are familiar with our <a href="{% url 'submissions:sub_and_ref_procedure' %}">refereeing procedure</a>, <a href="{% url 'submissions:referee_guidelines' %}">referee guidelines</a> and <a href="{% url 'journals:journals_terms_and_conditions' %}#referee_code_of_conduct">referee code of conduct</a>.
+    You might want to make sure you are familiar with our <a href="https://scipost.org{% url 'submissions:sub_and_ref_procedure' %}">refereeing procedure</a>, <a href="https://scipost.org{% url 'submissions:referee_guidelines' %}">referee guidelines</a> and <a href="https://scipost.org{% url 'journals:journals_terms_and_conditions' %}#referee_code_of_conduct">referee code of conduct</a>.
 </p>
 <p>
     We very much hope that we can count on your expertise,
diff --git a/templates/email/referees/invite_unregistered_to_referee_reminder1.html b/templates/email/referees/invite_unregistered_to_referee_reminder1.html
index 56487a316d05e86de1daf915d9fc966028fd5cc4..0825b9042b7f7174824c0e91430f1d35037a2069 100644
--- a/templates/email/referees/invite_unregistered_to_referee_reminder1.html
+++ b/templates/email/referees/invite_unregistered_to_referee_reminder1.html
@@ -25,7 +25,7 @@
   After activation of your registration, you will be allowed to contribute, in particular by providing referee reports.
 </p>
 <p>
-    You might want to make sure you are familiar with our <a href="{% url 'submissions:sub_and_ref_procedure' %}">refereeing procedure</a>, <a href="{% url 'submissions:referee_guidelines' %}">referee guidelines</a> and <a href="{% url 'journals:journals_terms_and_conditions' %}#referee_code_of_conduct">referee code of conduct</a>.
+    You might want to make sure you are familiar with our <a href="https://scipost.org{% url 'submissions:sub_and_ref_procedure' %}">refereeing procedure</a>, <a href="https://scipost.org{% url 'submissions:referee_guidelines' %}">referee guidelines</a> and <a href="https://scipost.org{% url 'journals:journals_terms_and_conditions' %}#referee_code_of_conduct">referee code of conduct</a>.
 </p>
 <p>
     We very much hope that we can count on your expertise,
diff --git a/templates/email/referees/invite_unregistered_to_referee_reminder2.html b/templates/email/referees/invite_unregistered_to_referee_reminder2.html
index 37e293508857ecaac23f6bffcb77ca669caf7a5e..f2dd29280d189c442c1c9717892d79040ac441f3 100644
--- a/templates/email/referees/invite_unregistered_to_referee_reminder2.html
+++ b/templates/email/referees/invite_unregistered_to_referee_reminder2.html
@@ -25,7 +25,7 @@
   After activation of your registration, you will be allowed to contribute, in particular by providing referee reports.
 </p>
 <p>
-    You might want to make sure you are familiar with our <a href="{% url 'submissions:sub_and_ref_procedure' %}">refereeing procedure</a>, <a href="{% url 'submissions:referee_guidelines' %}">referee guidelines</a> and <a href="{% url 'journals:journals_terms_and_conditions' %}#referee_code_of_conduct">referee code of conduct</a>.
+    You might want to make sure you are familiar with our <a href="https://scipost.org{% url 'submissions:sub_and_ref_procedure' %}">refereeing procedure</a>, <a href="https://scipost.org{% url 'submissions:referee_guidelines' %}">referee guidelines</a> and <a href="https://scipost.org{% url 'journals:journals_terms_and_conditions' %}#referee_code_of_conduct">referee code of conduct</a>.
 </p>
 <p>
     We very much hope that we can count on your expertise,
diff --git a/templates/email/referees/remind_referee_deadline_1week.html b/templates/email/referees/remind_referee_deadline_1week.html
index b9e9f9ddfde78cce804bda144d075de0fb13a05d..3ef9275a7d08287d28161b40eea0f210119f3bf1 100644
--- a/templates/email/referees/remind_referee_deadline_1week.html
+++ b/templates/email/referees/remind_referee_deadline_1week.html
@@ -4,7 +4,7 @@
 <p>
   This is a simple email to remind you of the approaching deadline (in one week) to send a Report on
   <br><br>
-  <a href="https://scipost.org{{invitation.submission.get_absolute_url}}">{{invitation.submission.title}}</a>
+  {{invitation.submission.title}}
   <br>by {{invitation.submission.author_list}}<br>
   (see https://scipost.org{{ invitation.submission.get_absolute_url }} - first submitted {{ invitation.submission.original_submission_date|date:"d M Y" }}).
 </p>