Cahiers ERTA, Numéro 23, 2020, pp. 25 - 44
https://doi.org/10.4467/23538953CE.20.010.12817Cahiers ERTA, Numéro 23, 2020, pp. 45 - 61
https://doi.org/10.4467/23538953CE.20.011.12818Cahiers ERTA, Numéro 23, 2020, pp. 63 - 77
https://doi.org/10.4467/23538953CE.20.012.12819