diff --git a/assets/figures/chapter-4/4.6.design-implementation-differences-sprints.png b/assets/figures/chapter-4/4.6.design-implementation-differences-sprints.png
new file mode 100644
index 0000000..2e7fb89
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diff --git a/chapters/4.application-implementation/4.5.problems-faced.tex b/chapters/4.application-implementation/4.5.problems-faced.tex
index e0bc091..84873eb 100644
--- a/chapters/4.application-implementation/4.5.problems-faced.tex
+++ b/chapters/4.application-implementation/4.5.problems-faced.tex
@@ -1 +1 @@
-\section{Προβλήματα ανάπτυξης}
+\section{Προβλήματα ανάπτυξης} \label{section:4-5-problems-faced}
diff --git a/chapters/4.application-implementation/4.6.design-implementation-differences.tex b/chapters/4.application-implementation/4.6.design-implementation-differences.tex
index d8c480a..240e939 100644
--- a/chapters/4.application-implementation/4.6.design-implementation-differences.tex
+++ b/chapters/4.application-implementation/4.6.design-implementation-differences.tex
@@ -1 +1,10 @@
-\section{Διαφορές σχεδιασμού-υλοποίησης} \label{section:4-5-design-implementation-differen}
+\section{Διαφορές σχεδιασμού-υλοποίησης} \label{section:4-6-design-implementation-differences}
+
+Εποπτικά, η διαδικασία της υλοποίησης περιγράφεται στο παρακάτω σχήμα (σχήμα \ref{figure:4.6.design-implementation-differences-sprints}).
+
+\begin{figure}[H]
+    \centering
+    \includegraphics[width=\textwidth]{assets/figures/chapter-4/4.6.design-implementation-differences-sprints.png}
+    \caption{Διαχωρισμός σε sprints}
+    \label{figure:4.6.design-implementation-differences-sprints}
+\end{figure}
diff --git a/thesis.pdf b/thesis.pdf
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