Akopyan, Arseniy, and Roman Karasev. “When Different Norms Lead to Same Billiard Trajectories?”https://doi.org/10.1007/s40879-020-00405-0__European Journal of Mathematics. Springer Nature, 2022.https://doi.org/10.1007/s40879-020-00405-0 .
LibreCat: https://research-explorer.ista.ac.at/record/7791
DOI: 10.1007/s40879-020-00405-0
arXiv: 1912.12685

Weighill, Thomas, Takamitsu Yamauchi, and Nicolò Zava. “Coarse Infinite-Dimensionality of Hyperspaces of Finite Subsets.”https://doi.org/10.1007/s40879-021-00515-3__European Journal of Mathematics. Springer Nature, 2021.https://doi.org/10.1007/s40879-021-00515-3 .
LibreCat: https://research-explorer.ista.ac.at/record/10608
DOI: 10.1007/s40879-021-00515-3

Akopyan, Arseniy, Richard Schwartz, and Serge Tabachnikov. “Billiards in Ellipses Revisited.”https://doi.org/10.1007/s40879-020-00426-9__European Journal of Mathematics. Springer Nature, 2020.https://doi.org/10.1007/s40879-020-00426-9 .
LibreCat: https://research-explorer.ista.ac.at/record/8538
DOI: 10.1007/s40879-020-00426-9
arXiv: 2001.02934

Kalinin, Nikita, and Mikhail Shkolnikov. “Tropical Formulae for Summation over a Part of SL(2,Z).”https://doi.org/10.1007/s40879-018-0218-0__European Journal of Mathematics. Springer Nature, 2019.https://doi.org/10.1007/s40879-018-0218-0 .
LibreCat: https://research-explorer.ista.ac.at/record/441
DOI: 10.1007/s40879-018-0218-0
arXiv: 1711.02089