Meijer (2019)

Meijer (2019)

Meijer (2019)

Joy (2020)

Joy (2020)

Meijer (2019)

Victor & Barnard (2016)

Keulartz (2021)

Franks et al. (2021)

Ashley (2006); Broom (2007); Huntingford et al. (2006); Martins et al. (2012)

Harari (2015)

Van der Peet et al. (2018)