@article{Romaniuk1980,
author = {Romaniuk, A.},
title= {Increase in natural fertility during the early stages of modernization: evidence from an African case study, Zaire},
year = {1980},
doi = {10.2307/2175188},
journal = {Population Studies },
volume = {34},
number = {2},
pages = {293--310},
}