TY - RPRT TI - Chimpanzees use numerous flexible vocal sequences with more than two vocal units: A step towards language? AU - Girard-Buttoz, C. AU - Zaccarella, E. AU - Bortolato, T. AU - Friederici, A. D. AU - Wittig, R. M. AU - Crockford, C. PY - 2021 DO - 10.1101/2021.02.03.429517 UR - https://www.biorxiv.org/content/10.1101/2021.02.03.429517v1 ID - 10.1101/2021.02.03.429517 ER -