diff --git a/visualizations/LandingGear/GearsDoors/LandingGear_R6.mch b/visualizations/LandingGear/GearsDoors/LandingGear_R6.mch
index 72bd1819e166f1370614ab88f8b30a4c1927338b..0c757ca067c37034036d77d487566ccae7b49376 100644
--- a/visualizations/LandingGear/GearsDoors/LandingGear_R6.mch
+++ b/visualizations/LandingGear/GearsDoors/LandingGear_R6.mch
@@ -1,3 +1,9 @@
+/*
+Original model from Event-B:
+L. Ladenberger, D. Hansen, H. Wiegard, J. Bendisposto, and M. Leuschel. Validation of the ABZ landing gear system using ProB. In Int. J. Softw. Tools Technol. Transf., 19(2):187–203, Apr. 2017.
+
+Translated to Classical B manually
+*/
 MACHINE LandingGear_R6
 SETS /* enumerated */
   DOOR_STATE={open,closed,door_moving};
diff --git a/visualizations/LandingGear/GearsDoors/physical.svg b/visualizations/LandingGear/GearsDoors/physical.svg
index 6b9a224c00c47cd67d52084428ed6287e5f958ac..15b5728d1bab0cc8d050c9d3eff066f1ee1df432 100644
--- a/visualizations/LandingGear/GearsDoors/physical.svg
+++ b/visualizations/LandingGear/GearsDoors/physical.svg
@@ -1,3 +1,4 @@
+<!-- From L. Ladenberger, D. Hansen, H. Wiegard, J. Bendisposto, and M. Leuschel. Validation of the ABZ landing gear system using ProB. In Int. J. Softw. Tools Technol. Transf., 19(2):187–203, Apr. 2017. !-->
 <svg width="947" height="728" xmlns="http://www.w3.org/2000/svg" id="landinggear" xmlns:xlink="http://www.w3.org/1999/xlink">
  <metadata id="metadata3467">image/svg+xml</metadata>
 
diff --git a/visualizations/LandingGear/HydraulicCircuit/LandingGear_R6.mch b/visualizations/LandingGear/HydraulicCircuit/LandingGear_R6.mch
index 72bd1819e166f1370614ab88f8b30a4c1927338b..0c757ca067c37034036d77d487566ccae7b49376 100644
--- a/visualizations/LandingGear/HydraulicCircuit/LandingGear_R6.mch
+++ b/visualizations/LandingGear/HydraulicCircuit/LandingGear_R6.mch
@@ -1,3 +1,9 @@
+/*
+Original model from Event-B:
+L. Ladenberger, D. Hansen, H. Wiegard, J. Bendisposto, and M. Leuschel. Validation of the ABZ landing gear system using ProB. In Int. J. Softw. Tools Technol. Transf., 19(2):187–203, Apr. 2017.
+
+Translated to Classical B manually
+*/
 MACHINE LandingGear_R6
 SETS /* enumerated */
   DOOR_STATE={open,closed,door_moving};
diff --git a/visualizations/LandingGear/HydraulicCircuit/architecture.svg b/visualizations/LandingGear/HydraulicCircuit/architecture.svg
index 81bba719c8c6819b864376d7f6a1046752211c32..66c9f0ca829689ccb1bbce7ffe784cc688a481a1 100644
--- a/visualizations/LandingGear/HydraulicCircuit/architecture.svg
+++ b/visualizations/LandingGear/HydraulicCircuit/architecture.svg
@@ -1,3 +1,4 @@
+<!-- From L. Ladenberger, D. Hansen, H. Wiegard, J. Bendisposto, and M. Leuschel. Validation of the ABZ landing gear system using ProB. In Int. J. Softw. Tools Technol. Transf., 19(2):187–203, Apr. 2017. !-->
 <?xml-stylesheet href="landinggear.css" type="text/css"?>
 
 <svg width="947" height="728" xmlns="http://www.w3.org/2000/svg" id="landinggear" xmlns:xlink="http://www.w3.org/1999/xlink">
diff --git a/visualizations/LandingGear/HydraulicCircuit/physical.svg b/visualizations/LandingGear/HydraulicCircuit/physical.svg
index 6b9a224c00c47cd67d52084428ed6287e5f958ac..15b5728d1bab0cc8d050c9d3eff066f1ee1df432 100644
--- a/visualizations/LandingGear/HydraulicCircuit/physical.svg
+++ b/visualizations/LandingGear/HydraulicCircuit/physical.svg
@@ -1,3 +1,4 @@
+<!-- From L. Ladenberger, D. Hansen, H. Wiegard, J. Bendisposto, and M. Leuschel. Validation of the ABZ landing gear system using ProB. In Int. J. Softw. Tools Technol. Transf., 19(2):187–203, Apr. 2017. !-->
 <svg width="947" height="728" xmlns="http://www.w3.org/2000/svg" id="landinggear" xmlns:xlink="http://www.w3.org/1999/xlink">
  <metadata id="metadata3467">image/svg+xml</metadata>
 
diff --git a/visualizations/LightModel/BlinkLamps_v3.mch b/visualizations/LightModel/BlinkLamps_v3.mch
index 78ad6fc069a5c106451640dfd93ee5dee8866a22..a3efb1a4a7982750f9f367339251323b556c409d 100644
--- a/visualizations/LightModel/BlinkLamps_v3.mch
+++ b/visualizations/LightModel/BlinkLamps_v3.mch
@@ -1,3 +1,7 @@
+/*
+Formal Model and VisB Visualization from
+M. Leuschel, M. Mutz, and M. Werth. Modelling and Validating an Automotive System in Classical B and Event-B. In Proceedings ABZ, LNCS 12071, pages 335–350, 2020.
+*/
 MACHINE BlinkLamps_v3
 // Manage Blinking Lights Actuators (blinkLeft, blinkRight)
 // and manage timing cycles
diff --git a/visualizations/LightModel/GenericTimersMC.mch b/visualizations/LightModel/GenericTimersMC.mch
index 80cb34ee6e39fa2c24e7c861f016a4b06508eb8f..35ded86c5c2ab5403f46959ef8f44961603c11cc 100644
--- a/visualizations/LightModel/GenericTimersMC.mch
+++ b/visualizations/LightModel/GenericTimersMC.mch
@@ -1,3 +1,7 @@
+/*
+Formal Model and VisB Visualization from
+M. Leuschel, M. Mutz, and M. Werth. Modelling and Validating an Automotive System in Classical B and Event-B. In Proceedings ABZ, LNCS 12071, pages 335–350, 2020.
+*/
 MACHINE GenericTimersMC
 
 SETS TIMERS = {blink_deadline, tip_deadline}
diff --git a/visualizations/LightModel/PitmanController_TIME_MC_v4.mch b/visualizations/LightModel/PitmanController_TIME_MC_v4.mch
index bc7ab486d668edfd8c22ba8133a3ca0bfb7715cf..3192f969d57ed6f95e760ab07e16b0f0783ce4bc 100644
--- a/visualizations/LightModel/PitmanController_TIME_MC_v4.mch
+++ b/visualizations/LightModel/PitmanController_TIME_MC_v4.mch
@@ -1,3 +1,7 @@
+/*
+Formal Model and VisB Visualization from
+M. Leuschel, M. Mutz, and M. Werth. Modelling and Validating an Automotive System in Classical B and Event-B. In Proceedings ABZ, LNCS 12071, pages 335–350, 2020.
+*/
 MACHINE PitmanController_TIME_MC_v4
 
 INCLUDES BlinkLamps_v3, Sensors, GenericTimersMC
diff --git a/visualizations/LightModel/Sensors.mch b/visualizations/LightModel/Sensors.mch
index 1b3342e7a1df7afc251865a4a2797ce5edeb4915..007a51f8accd9e08996da6e1756d6aeeec2d7629 100644
--- a/visualizations/LightModel/Sensors.mch
+++ b/visualizations/LightModel/Sensors.mch
@@ -1,3 +1,7 @@
+/*
+Formal Model and VisB Visualization from
+M. Leuschel, M. Mutz, and M. Werth. Modelling and Validating an Automotive System in Classical B and Event-B. In Proceedings ABZ, LNCS 12071, pages 335–350, 2020.
+*/
 MACHINE Sensors
 /*
  Sensors and sensor value updates