diff --git a/biblio/chapters/literature.tex b/biblio/chapters/literature.tex
index 52106c9..00591ec 100644
--- a/biblio/chapters/literature.tex
+++ b/biblio/chapters/literature.tex
@@ -430,14 +430,53 @@ porosity induced friction.
 
 Displacement of blocks or boulders by waves has been a major topic in
 understanding the influence of storm and tsunami waves in coastal regions.
-Several approaches have been taken to study this phenomenon. In a first part,
-we will discuss in-situ studies on displaced boulders. In a second part, we
-will review models of block displacements.
+Several approaches have been taken to study this phenomenon.
+
+% In a first part, we will discuss in-situ studies on displaced boulders. In a
+% second part, we will review models of block displacements.
+
+\subsection{Models}
+
+The main goal of studying boulder displacement is generally to establish the
+cause of boulder deposits in coastal areas. \textcite{nott1997extremely} was
+among the first to propose hydrondynamic equations that aimed to calculate the
+wave height that would lead to the displacement of a boulder for storm and
+tsunami waves. The main difference between storm and tsunami waves in those
+equations was the flow velocity relative to wave height. The calculation of the
+minimum flow velocity for boulder transport is obtained by calculating an
+equilibrium between drag, lift and restraining forces.
+
+Those equations were refined by \textcite{nott2003waves} in order to account
+for the pre-transport environment of the boulder. \citeauthor{nott2003waves}
+derived equations for submerged, sub-aerial and joint bounder boulders. A new
+parameter ($\delta$) was introduced to differentiate between tsunami and storm
+waves. This study highlights the importance of the initial environment of a
+boulder for wave transport conditions. Compared to the equations from
+\textcite{nott1997extremely}, an aditionnal inertia term is added to the
+equilibrium equation for sub-aerial boulders, while the drag force is removed
+for joint-bounded blocks.
+
+\textcite{nandasena2011reassessment} noted that \citeauthor{nott2003waves}'s
+equations could be improved, and proposed a new set of equations correcting
+the lift and inertia terms in \citeauthor{nott2003waves}'s equations.
+\textcite{nandasena2011reassessment} found that the new equations produced up
+to a \SI{65}{\percent} difference with \citeauthor{nott2003waves}'s equations.
+
+\textcite{buckley2012inverse} proposed alternative equations for sliding and
+overturning of submerged boulders. An equation for block sliding was introduced
+by considering friction on the bed. \textcite{weiss2012mystery} investigated
+the influence of bed roughness on block displacement. A new stability criteria
+was established, and bed roughness was found to be a major factor in boulder
+displacement. In contrast with the findings from \textcite{nott2003waves}, the
+threshold wave amplitude for block displacement was found to be similar between
+tsunami and storm waves.
 
 \subsection{In-situ studies}
 
-\cite{barbano2010large}
-\cite{paris2011}
+\cite{barbano2010large}: boulders deposity in Sicily -> probably tsunamis
+
+\cite{paris2011}: 
+
 \cite{nandasena2011numerical}
 \cite{may2015block}
 \cite{biolchi2016}