@article {333410,
	title = {Humans 40,000 y ago developed a system of conventional signs},
	journal = {Proceedings of the National Academy of Sciences},
	volume = {123},
	year = {2026},
	month = {2026/02/23},
	isbn = {0027-84241091-6490},
	doi = {https://doi.org/10.1073/pnas.2520385123},
	url = {https://www.pnas.org/doi/10.1073/pnas.2520385123},
	author = {Bentz, Christian and Dutkiewicz, Ewa}
}
