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V.~A. Belinskii, I.~M. Khalatnikov and E.~M. Lifshitz,
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F.~B\'eguin and T.~Dutilleul,
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B.~Brehm,
\emph{Bianchi VIII and IX vacuum cosmologies: Almost every solution
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T.~Damour and O.~M. Lecian,
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J.~M. Heinzle and C.~Uggla,
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I.~M. Khalatnikov, E.~M. Lifshitz, K.~M. Khanin, L.~N. Shchur
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S.~Liebscher, J.~H\"arterich, K.~Webster and M.~Georgi,
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H.~Ringstr\"om,
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\bibitem{RT}
M.~Reiterer and E.~Trubowitz,
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\bibitem{Walkden}
C.~Walkden,
\emph{Ergodic Theory}, lecture notes, University of Manchester,
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\href{https://personalpages.manchester.ac.uk/staff/Charles.Walkden/ergodic-theory/ergodic_theory.pdf}{Online lecture notes}.

\end{thebibliography}