introduction draft

paper.bbl

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+\begin{thebibliography}{1}
+
+\bibitem{abrash:2013}
+Michael Abrash.
+\newblock Why virtual reality is hard (and where it might be going).
+\newblock {\em Game Developers Conference 2013}, 2013.
+
+\bibitem{aliaga:1997}
+Daniel~G Aliaga and Anselmo~A Lastra.
+\newblock Architectural walkthroughs using portal textures.
+\newblock In {\em Proceedings. Visualization '97 (Cat. No. 97CB36155)}, pages
+  355--362. IEEE, 1997.
+
+\bibitem{boletsis:2017}
+Costas Boletsis.
+\newblock The new era of virtual reality locomotion: A systematic literature
+  review of techniques and a proposed typology.
+\newblock {\em Multimodal Technologies and Interaction}, 1(4), 2017.
+
+\bibitem{lochner:2021}
+Daniel Lochner.
+\newblock Vr natural walking in impossible spaces.
+\newblock {\em Motion, Interaction and Games (MIG '21)}, 2021.
+
+\bibitem{lowe:2005}
+Nick Lowe and Amitava Datta.
+\newblock A new technique for rendering complex portals.
+\newblock {\em IEEE Transactions on Visualization and Computer Graphics},
+  11(1):81--90, 2005.
+
+\end{thebibliography}