diff --git a/1-background/related-work/2-wearable-haptics.tex b/1-background/related-work/2-wearable-haptics.tex
index 74ffa66..049b891 100644
--- a/1-background/related-work/2-wearable-haptics.tex
+++ b/1-background/related-work/2-wearable-haptics.tex
@@ -108,7 +108,7 @@ Some actuators are capable of both normal and tangential motion over 3 \DoFs on
 A simpler alternative approach is to place a belt under the finger, and to actuate it over 2 \DoFs by two motors placed on top of the finger \cite{minamizawa2007gravity}.
 By turning in opposite directions, the motors shorten the belt and create a sensation of pressure.
 Conversely, by turning simultaneously in the same direction, the belt pulls on the skin, creating a shearing sensation.
-The simplicity of this approach allows the belt to be placed anywhere on the hand, leaving the fingertip free to interact with the \RE, \eg the hRing on the proximal phalanx in \figref{pacchierotti2016hring} \cite{pacchierotti2016hring} or Tasbi on the wrist in \figref{pezent2022design} \cite{pezent2022design}.
+The simplicity of this approach allows the belt to be placed anywhere on the hand, leaving the fingertip free to interact with the \RE, \eg the hRing on the proximal phalanx in \figref{pacchierotti2016hring_1} \cite{pacchierotti2016hring} or Tasbi on the wrist in \figref{pezent2022design} \cite{pezent2022design}.
 
 \begin{subfigs}{tangential_belts}{Tangential motion actuators and compression belts. }[][
   \item A skin strech actuator for the fingertip \cite{leonardis2015wearable}.
@@ -120,7 +120,7 @@ The simplicity of this approach allows the belt to be placed anywhere on the han
   \subfigsheight{33.5mm}
   \subfig{leonardis2015wearable}
   \subfig{schorr2017fingertip}
-  \subfig{pacchierotti2016hring}
+  \subfig{pacchierotti2016hring_1}
   \subfig{pezent2022design}
 \end{subfigs}
 
diff --git a/1-background/related-work/3-augmented-reality.tex b/1-background/related-work/3-augmented-reality.tex
index b9b497e..f735ed1 100644
--- a/1-background/related-work/3-augmented-reality.tex
+++ b/1-background/related-work/3-augmented-reality.tex
@@ -212,7 +212,7 @@ These \emph{time-multiplexed} interfaces require interaction techniques that all
 
 Still, the virtual visual rendering and the tangible haptic sensations can be inconsistent.
 Especially in \OST-\AR, since the \VOs are inherently slightly transparent allowing the paired tangibles to be seen through them.
-In a pick-and-place task with tangibles of different shapes, a difference in size \cite{kahl2021investigation} (\figref{kahl2021investigation}) and shape \cite{kahl2023using} (\figref{kahl2023using}) of the \VOs does not affect user performance or presence, and that small variations (\percent{\sim 10} for size) were not even noticed by the users.
+In a pick-and-place task with tangibles of different shapes, a difference in size \cite{kahl2021investigation} (\figref{kahl2021investigation}) and shape \cite{kahl2023using} (\figref{kahl2023using_1}) of the \VOs does not affect user performance or presence, and that small variations (\percent{\sim 10} for size) were not even noticed by the users.
 This suggests the feasibility of using simplified tangibles in \AR whose spatial properties (\secref{object_properties}) abstract those of the \VOs.
 Similarly, in \secref{tactile_rendering} we described how a material property (\secref{object_properties}) of a touched tangible can be modified using wearable haptic devices \cite{detinguy2018enhancing,salazar2020altering}: It could be used to render coherent visuo-haptic material perceptions directly touched with the hand in \AR.
 
@@ -226,7 +226,7 @@ Similarly, in \secref{tactile_rendering} we described how a material property (\
   \subfig{jain2023ubitouch}
   \subfig{issartel2016tangible}
   \subfig{kahl2021investigation}
-  \subfig{kahl2023using}
+  \subfig{pacchierotti2016hring_1}
 \end{subfigs}
 
 \subsubsection{Manipulating with Virtual Hands}
diff --git a/1-background/related-work/4-visuo-haptic-ar.tex b/1-background/related-work/4-visuo-haptic-ar.tex
index 141c2c6..ba084fa 100644
--- a/1-background/related-work/4-visuo-haptic-ar.tex
+++ b/1-background/related-work/4-visuo-haptic-ar.tex
@@ -11,7 +11,7 @@ It is essential to understand how a multimodal visuo-haptic rendering of a \VO i
 % delocalized : not at the point of contact = difficult to integrate with other perceptual cues ?
 
 \subsection{Visuo-Haptic Perception of Virtual and Augmented Objects}
-\label{sensations_perception}
+\label{vh_perception}
 
 \subsubsection{Merging the Sensations into a Perception}
 \label{sensations_perception}
@@ -163,7 +163,7 @@ Another category of actuators relies on systems that cannot be considered as por
 \label{vhar_nails}
 
 \textcite{ando2007fingernailmounted} were the first to propose to moving the actuator from the fingertip to the nail, as described in \secref{texture_rendering}.
-This approach was later extended by \textcite{teng2021touch} with Touch\&Fold, a haptic device able to unfold its end-effector on demand to make contact with the fingertip when touching \VOs (\figref{teng2021touch}).
+This approach was later extended by \textcite{teng2021touch} with Touch\&Fold, a haptic device able to unfold its end-effector on demand to make contact with the fingertip when touching \VOs (\figref{teng2021touch_1}).
 This moving platform also contains a \LRA (\secref{moving_platforms}) and provides contact pressure and texture sensations.
 %The whole system is very compact (\qtyproduct{24 x 24 x 41}{\mm}), lightweight (\qty{9.5}{\g}), and fully portable by including a battery and Bluetooth wireless communication. \qty{20}{\ms} for the Bluetooth
 When touching \VOs in \OST-\AR with the index finger, this device was found to be more realistic overall (5/7) than vibrations with a \LRA at \qty{170}{\Hz} on the nail (3/7).
@@ -190,7 +190,7 @@ However, no proper user study has been conducted to evaluate these devices in \A
   ]
   \subfigsheight{33mm}
   %\subfig{ando2007fingernailmounted}
-  \subfig{teng2021touch}
+  \subfig{teng2021touch_1}
   \subfig{maeda2022fingeret}
   \subfig{preechayasomboon2021haplets}
 \end{subfigs}
diff --git a/1-background/related-work/figures/kahl2023using.jpg b/1-background/related-work/figures/kahl2023using_1.jpg
similarity index 100%
rename from 1-background/related-work/figures/kahl2023using.jpg
rename to 1-background/related-work/figures/kahl2023using_1.jpg
diff --git a/1-background/related-work/figures/pacchierotti2016hring.jpg b/1-background/related-work/figures/pacchierotti2016hring_1.jpg
similarity index 100%
rename from 1-background/related-work/figures/pacchierotti2016hring.jpg
rename to 1-background/related-work/figures/pacchierotti2016hring_1.jpg
diff --git a/1-background/related-work/figures/teng2021touch.jpg b/1-background/related-work/figures/teng2021touch_1.jpg
similarity index 100%
rename from 1-background/related-work/figures/teng2021touch.jpg
rename to 1-background/related-work/figures/teng2021touch_1.jpg