\documentclass[a4paper,twoside,symmetric,concrete,justified,sfsidenotes]{unicam-diss}
\addbibresource{references.bib}
\makeglossaries[abbreviations]
\usepackage{lipsum}
% \AtBeginDocument{% use this to change font size
% \fontsize{12}{15}\selectfont
% }%
\input{backmatter/abbreviations}
\input{backmatter/notation}
\begin{document}
\frontmatter
\pagenumbering{roman}
\input{frontmatter/titlepage}
\input{frontmatter/imprint-colophon}
\input{frontmatter/declaration}
\input{frontmatter/dedication-epigraph}
\input{frontmatter/abstract}
\input{frontmatter/lists}
\mainmatter
\pagenumbering{arabic}
\part{Prologue}
\input{frontmatter/introduction}
\part{XXXXXXXXXXXXXXX}
\input{mainmatter/ch1}
\part{Epilogue}
\input{backmatter/conclusion}
\backmatter
\glsaddall
\begin{multipagefullwidth}
\printglossary[type=abbreviations,style=mcolindex]
\printnomenclature
%\begin{sloppypar} % use this if you get overfull hboxes in bibliography
\printbibliography
%\end{sloppypar}
\input{backmatter/acknowledgements}
\end{multipagefullwidth}
\end{document}