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Richthammer T. Lower Bound on the Mean Square Displacement of Particles in the Hard Disk Model. Communications in Mathematical Physics . 2016;345:1077-1099. doi:https://link.springer.com/article/10.1007/s00220-016-2584-0

Richthammer T, Biskup M. Gibbs measures on permutations over one-dimensional discrete point sets. Communications in Mathematical Physics. 2015;25(2):898-929. doi:https://doi.org/10.48550/arXiv.1310.0248