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arxiv.org
Schymura, Matthias; Yuan, Liping (2019), "A note on discrete lattice-periodic sets with an application to Archimedean tilings", Beiträge zur Algebra und Geometrie, 60 (4): 749–759, arXiv:1710.02552, doi:10.1007/s13366-019-00446-x, MR4025474
Sotiraki, Katerina; Zampetakis, Manolis; Zirdelis, Giorgos (2018), "PPP-completeness with connections to cryptography", in Thorup, Mikkel (ed.), 59th IEEE Annual Symposium on Foundations of Computer Science, FOCS 2018, Paris, France, October 7-9, 2018, IEEE Computer Society, pp. 148–158, arXiv:1808.06407, doi:10.1109/FOCS.2018.00023, MR3899585
Schymura, Matthias; Yuan, Liping (2019), "A note on discrete lattice-periodic sets with an application to Archimedean tilings", Beiträge zur Algebra und Geometrie, 60 (4): 749–759, arXiv:1710.02552, doi:10.1007/s13366-019-00446-x, MR4025474
Sotiraki, Katerina; Zampetakis, Manolis; Zirdelis, Giorgos (2018), "PPP-completeness with connections to cryptography", in Thorup, Mikkel (ed.), 59th IEEE Annual Symposium on Foundations of Computer Science, FOCS 2018, Paris, France, October 7-9, 2018, IEEE Computer Society, pp. 148–158, arXiv:1808.06407, doi:10.1109/FOCS.2018.00023, MR3899585