@article{Tennie_2020,
doi = {10.1098/rstb.2019.0423},
url = {https://doi.org/10.1098%2Frstb.2019.0423},
year = 2020,
month = {jun},
publisher = {The Royal Society},
volume = {375},
number = {1805},
pages = {20190423},
author = {Claudio Tennie and Carel P. van Schaik},
title = {Spontaneous (minimal) ritual in non-human great apes?},
journal = {Philosophical Transactions of the Royal Society B: Biological Sciences}
}