@article{Pison1980,
author = {Pison, G.},
title= {Calculer l’âge sans le demander: Méthode d’estimation de l’âge et structure par âge des Peul Bandé [Calculating age without asking for it: Method of estimating the age and age-structure of the Peul-Bande]},
year = {1980},
doi = {10.2307/1532366},
volume = {35},
number = {4–5},
pages = {861--892},
}