diff --git a/app/assets/javascripts/editor/editor.js.erb b/app/assets/javascripts/editor/editor.js.erb
index 233e6b5a..2af1c3a7 100644
--- a/app/assets/javascripts/editor/editor.js.erb
+++ b/app/assets/javascripts/editor/editor.js.erb
@@ -867,7 +867,7 @@ var CodeOceanEditor = {
                             // timeUntilIntervention passed
                             if (editor.data('tips-interventions')) {
                                 const modal = $('#tips-intervention-modal');
-                                modal.find('.modal-footer').text(I18n.t("exercises.implement.intervention.explanation", {duration: Math.round(percentile75 / 60)}));
+                                modal.find('.modal-footer').html(I18n.t("exercises.implement.intervention.explanation", {duration: Math.round(percentile75 / 60)}));
                                 modal.modal('show');
                                 $.ajax({
                                     data: {
@@ -879,7 +879,7 @@ var CodeOceanEditor = {
                                 });
                             } else if (editor.data('break-interventions')) {
                                 const modal = $('#break-intervention-modal');
-                                modal.find('.modal-footer').text(I18n.t("exercises.implement.intervention.explanation", {duration: Math.round(percentile75 / 60)}));
+                                modal.find('.modal-footer').html(I18n.t("exercises.implement.intervention.explanation", {duration: Math.round(percentile75 / 60)}));
                                 modal.modal('show');
                                 $.ajax({
                                     data: {
@@ -895,7 +895,7 @@ var CodeOceanEditor = {
                                 if (!button.prop('disabled')) {
                                     $('#rfc_intervention_text').show();
                                     modal = $('#comment-modal');
-                                    modal.find('.modal-footer').text(I18n.t("exercises.implement.intervention.explanation", {duration: Math.round(percentile75 / 60)}));
+                                    modal.find('.modal-footer').html(I18n.t("exercises.implement.intervention.explanation", {duration: Math.round(percentile75 / 60)}));
                                     modal.on('hidden.bs.modal', function () {
                                         modal.find('.modal-footer').text('');
                                     });
diff --git a/config/locales/de.yml b/config/locales/de.yml
index 8f5139de..bccf33b9 100644
--- a/config/locales/de.yml
+++ b/config/locales/de.yml
@@ -453,7 +453,7 @@ de:
         request: "Kommentaranfrage stellen"
         question: "Bitte beschreiben Sie kurz Ihre Probleme oder nennen Sie den Programmteil, zu dem Sie Feedback wünschen. Ihr Programmcode und eventuelle Fehlermeldungen werden automatisch zur Anfrage hinzugefügt."
       intervention:
-        explanation: "Diese Meldung erscheint, weil Sie %{duration} Minuten an dieser Aufgabe gearbeitet haben. 25% Ihrer Mitlernenden arbeiten länger daran, insofern ist das kein Problem, aber dies hat sich als effektiven Zeitpunkt für diese Meldung erwiesen."
+        explanation: "Diese Meldung erscheint, weil Sie %{duration} Minuten an dieser Aufgabe gearbeitet haben. 25% Ihrer Mitlernenden arbeiten länger daran, insofern ist das kein Problem, aber dies hat sich als <a href='https://hpi.de/forschung/publikationen/dissertationen/dissertation-ralf-teusner.html' style='display: contents;'>effektiven Zeitpunkt für diese Meldung</a> erwiesen."
       rfc_intervention:
         text: "Falls Sie bei dieser Aufgabe nicht weiterkommen und nicht selbst weiter knobeln möchten, können Ihre Mitlernenden bestimmt helfen! </br> </br>"
       break_intervention:
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 43682596..946f58b9 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -453,7 +453,7 @@ en:
         request: "Request Comments"
         question: 'Please shortly describe your problem or the program part you would like to get feedback for. Your program code and potential error messages are automatically appended to your request.'
       intervention:
-        explanation: "This message appears because you have been working on this exercise for %{duration} minutes. 25% of your fellow learners took more time to solve the exercise, so in that sense it's not a problem, but this has proven to be an effective time for this message."
+        explanation: "This message appears because you have been working on this exercise for %{duration} minutes. 25% of your fellow learners took more time to solve the exercise, so in that sense it's not a problem, but this has proven to be an <a href='https://hpi.de/en/research/publications/dissertations/dissertation-ralf-teusner.html' style='display: contents;'>effective time for this message</a>."
       rfc_intervention:
         text: "If you are struggling with this exercise and don't want to continue on your own, your fellow learners can help out! </br> </br>"
       break_intervention: