\chapter{Background}
\label{cha:back}

Some text to explain what's to come. In \cref{sec:back_A} we explore concept A, then we continue with concept B in \cref{sec:back_B}

\section{Concept A}
\label{sec:back_A}

Doe introduces the context of Y \cite{doe2017exploring}. Smith et al. discuss the implementation of X \cite{smith2018implementing}. We implement W, as describe by Alice \cite{alice2016handbook}.

\section{Concept B}
\label{sec:back_B}

More references.

\section{Conclusion}
\label{sec:back_concl}

Here we conclude the background, recap concepts explored and key notions for rest of document.

In next chapter, \cref{cha:dev}, we do some implementation for concept A. \cref{cha:eval} will detail our evaluation of concept B.